St. 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 you, 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 for the ruin of souls. Amen.
This is a powerful prayer against evil spirits and unseen creatures. If possible memorize this prayer and recite it loudly when needed.