Prayer to St. Michael the Archangel

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 divine Power of God,
thrust into Hell Satan
and all the other evil spirits,
who wander through the world seeking the ruin of souls.
Amen.

Fatima Prayer

Oh my God, I believe, I adore, I trust, and I love You.
I beg You pardon for all those who do not believe,
do not adore, do not trust, and do not love You.
Amen.

St. Gertrude's Prayer to release 1,000 souls from Purgatory

Oh my God, I offer Thee the most precious Blood
of Thy Divine Son, Jesus,
in union with all the Masses being offered throughout the world today,
for the souls in Purgatory, for sinners everywhere,
those in the Universal Church, and those in my own family.

Short Divine Mercy Prayer for Conversion

Oh Blood and Water, which gushed forth
from the Heart of Jesus as a fountain of mercy for us,
I trust in You.

Source: The Catholic Mother's Resource Guide, Maria Compton-Hernandez