I always like to promote praying for the souls in Purgatory, and came across this prayer in the Raccolta to share with you. Also remind you that Lent begins next week, and you can offer up your suffrages for the relief of the Holy Souls.
O Lord Jesus Christ, King of glory,
deliver the souls of all the faithful departed
from the pains of hell and from the bottomless pit;
deliver them out of the lion's mouth,
lest hell should swallow them up,
lest they fall into the outer darkness;
but let thy standard-bearer, Saint Michael,
bring them back to Thy holy light
which Thou didst promise of old to Abraham and to his seed.