On All Hallow’s Eve

Saint Michael the Archangel
defend us in battle;
be our protection
against the wickedness and snares of the devil.
May God rebuke him, we humbly pray:
and do thou, O Prince of the heavenly host,
by the power of God, thrust into hell
Satan and all the evil spirits
who prowl about the world
seeking the ruin of souls.
Amen.
Leo XIII

Sancte Michael Archangele,
defende nos in proelio;
contra nequitiam et insidias diaboli
esto praesidium.
Imperet illi Deus, supplices deprecamur:
tuque, Princeps militiae Caelestis,
satanam aliosque spiritus malignos,
qui ad perditionem animarum
pervagantur in mundo,
divina virtute in infernum detrude.
Amen.

(adapted from a previous post)