Prayer to Saint Michael the Archangel
"Saint Michael, the archangel, defend us in battle,
be our protection against the malice and snares of the devil.
We humbly beseech God to command him,
and do thou, O prince of the heavenly host,
by the divine power thrust into hell Satan
and the other evil spirits who roam through the world
seeking the ruin of souls. Amen."
-Wartime Prayers (Armed with the Faith: A Catholic Handbook for Military Personnel, 4th Ed)