Saint Michael's Prayer

The Prayer to Saint Michael is used most prevalently among Catholics. Recently a fractured version of it was used in the movie Gangs of New York (2002) whenPriest Vallon and his son Amsterdam recite it, but the prayer is used out of context, i.e. for a physical battle rather than a spiritual battle.

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.

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,
cast (thrust) into hell Satan and all (other) evil spirits
who wander through the world seeking the ruin of souls.