This is a very powerful prayer invoking the assistance of St. Michael the Archangel. When you are feeling fearful or afflicted by negative energies, say this prayer with sincerity. This is a wonderful prayer to say everyday.

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 evil spirits
who wander through the world for the ruin of souls.

Amen

St. Michael's Feast Day is celebrated
on September 29th.