The feast day of St. Michael the Archangel is September 29th, a Sunday this year, and the feast of the Guardian Angels is October 2nd.
Bless the lord, ye his angels, that excel in strength,that do his commandments, hearkening unto the voice of his word.(Psalm 103:20)
Saint Michael the Archangel, defend us in battle, be our defense against the wickedness and snares of the devil. May God rebuke him, we humbly pray! And do thou, prince of the heavenly hosts, by the power of God, thrust into hell Satan and all the other evil spirits, who prowl about the world, seeking the destruction of souls. Amen.