St. Michael Prayer (from Raccolta of 1910) English translation

 300 days indulgence, once a day.  Pope Leo XIII, September 23, 1888.

 O GLORIOUS Archangel St Michael, Prince of the heavenly host, be our defense in the terrible warfare which we carry on against principalities and Powers, against the rulers of this world of darkness, spirits of evil. Come to the aid of man, whom GOD created immortal, made in his own image and likeness, and redeemed at a great price from the tyranny of the devil. Fight this day the battle of the LORD, together with the holy angels, as already thou hast fought the leader of the proud angels, Lucifer, and his apostate host, who were powerless to resist thee, nor was there place for them any longer in Heaven.

 That cruel, that ancient serpent, who is called the devil or Satan, who seduces the whole world, was cast into the abyss with his angels. Behold, this primeval enemy and slayer of men has taken courage. Transformed into an angel of light, he wanders about with all the multitude of wicked spirits, invading the earth in order to blot out the name of God and of his CHRIST, to seize upon, slay and cast into eternal perdition souls destined for the crown of eternal glory. This wicked dragon pours out, as a most impure flood, the venom of his malice on men of depraved mind and corrupt heart, the spirit of lying, of impiety, of blasphemy, and the pestilent breath of impurity, and of every vice and iniquity.

 These most crafty enemies have filled and inebriated with gall and bitterness the Church, the spouse of the Immaculate Lamb, and have laid impious hands on her most sacred possessions. In the Holy Place itself, where has been set up the See of the most holy Peter and the Chair of Truth for the light of the world, they have raised the throne of their abominable impiety, with the iniquitous design that when the Pastor has been struck, the sheep may be scattered.  

 Arise then, O invincible Prince, bring help against the attacks of the lost spirits to the people of GOD, and give them the victory. They venerate thee as their protector and patron; in thee Holy Church glories as her defence against the malicious power of hell; to thee has GOD entrusted the souls of men to be established in heavenly beatitude. Oh, pray to the GOD of peace that He may put Satan under our feet, so far conquered that he may no longer be able to hold men in captivity and harm the Church. Offer our prayers in the sight of the Most High, so that they may quickly conciliate the mercies of the LORD; and beating down the dragon, the ancient serpent, who is the devil and Satan, do thou again make him captive in the abyss, that he may no longer seduce the nations.  Amen.

 V/. Behold the Cross of the LORD ; be scattered ye hostile powers.

R/. The Lion of the tribe of Juda has conquered, the root of David.

V/. Let thy mercies be upon us, O LORD.

R/. As we have hoped in thee.

V/. O LORD, hear my prayer.

R/. And let my cry come unto thee.

 Let us pray.

 O GOD, the FATHER of our LORD JESUS CHRIST, we call upon Thy Holy Name, and as suppliants we implore thy clemency, that by the intercession of Mary, ever Virgin Immaculate and our Mother, and of the glorious Archangel St.  Michael, thou wouldst deign to help us against Satan and all other unclean spirits, who wander about the world for the injury of the human race and the ruin of souls. Amen.

[Source:  The Raccolta of 1910].

Ad S. Michaelem Archangelum precatio (Latin original prayer)

Princeps gloriosissime coelestis militiae, sancte Michael Archangele, defende nos in praelio et colluctatione, quae nobis est adversus principes et potestates, adversus mundi rectores tenebrarum harum, contra spiritualia nequitiae, in coelestibus. (Ephes. 6) Veni in auxilium hominum; quos Deus creavit inexterminabiles, et ad imaginem similitudinis suae fecit, et a tyrannide diaboli emit pretio magno. (Sap. [Wis.] 2 :1. Cor. 6) Proeliare hodie cum beatorum Angelorum exercitu proelia Domini, sicut pugnasti olim contra ducem superbiae luciferum et angelos ejus apostaticos; et non valuerunt, neque locus inventus est eorum amplius in coelo.

Sed projectus est draco ille magnus, serpens antiquus, qui vocatur diabolus et satanas, qui seducit universum orbem; et projectus est in terram; et angeli ejus cum illo missi sunt. (Apoc. 12) En antiquus inimicus et homicida vehementer erectus est. Transfiguratus in angelum lucis, cum tota malignorum spritituum caterva late circuit et invadit terram, ut in ea deleat nomen Dei et Christi ejus, animasque ad aeternae gloriae coronam destinatas furetur, mactet ac perdat in sempiternum interitum. Virus nequitiae suae, tamquam flumen immundissimum, draco maleficus transfundit in homines depravatos mente et corruptos corde: spiritum mendacii, impietatis et blasphemiae; halitumque mortiferum luxuriae, vitiorum omnium et iniquitatum.

Ecclesiam, Agni immaculati sponsam, vaferrimi hostes repleverunt amaritudinibus, inebriarunt absinthio; ad omnia desiderabilia ejus impias miserunt manus. Ubi sedes beatissimi Petri et Cathedra Veritatis ad lucem gentium constituta est, ibi thronum posuerunt abominationis impietatis suae; ut percusso Pastore, et gregem disperdere valeant.

Adesto itaque, Dux invictissime, populo Dei contra irrumpentes spiritales nequitias, et fac victoriam. Te custodem et patronum sancta veneratur Ecclesia; te gloriatur defensore adversus terrestrium et infernorum nefarias potestates; tibi tradidit Dominus animas redemptorum in superna felicitate locandas.

Deprecare Deum pacis, ut conterat satanam sub pedibus nostris, ne ultra valeat captivos tenere homines, et Ecclesiae nocere. Offer nostras preces in conspectu Altissimi, ut cito anticipent nos misericordiae Domini, at aprehendas draconem serpentem antiquum, qui est diabolus et satanas, ac ligatum mittas in abyssum, ut non seducat amplius gentes. (Apoc. 20)

Hinc tuo confisi praesidio ac tutela, sacra Sanctae Matris Ecclesiae auctoritate, ad infestationes diabolicae fraudis repellendas in nomine Jesu Christi Dei et Domini nostri fidentes et securi aggredimur.

V.  Ecce Crucem Domini, fugite partes adversae.

R.  Vicit leo de tribu Juda, radix David.

V.  Fiat misericordia tua, Domine, super nos.

R.  Quemadmodum speravimus in te.

V.  Domine, exaudi orationem meam.

R.  Et clamur meus at te veniat.

V.  Dominus vobiscum.

R.  Et cum spiritu tuo.

Oremus

Deus, et Pater Domini nostri Jesu Christi, invocamus nomen sanctum tuum, et clementiam tuam supplices exposcimus : ut per intercessionem immaculatae semper Virginis Dei Genitricis Mariae, beati Michaelis Archangeli, beati Joseph ejusdem beatae Virginis Sponsi, beatorum Apostolorum Petri et Pauli et omnium Sanctorum, adversus satanam, omnesque alios imundos spiritus, qui ad nocendum humano generi animasque perdendas pervagantur in mundo, nobis auxilium praestare digneris. Per eumdem Christum Dominum nostrum.

R.  Amen.