Perhaps the best known prayer of Catherine McAuley is one she called her Suscipe or Act of Resignation.

Suscipe of Catherine McAuley

My God, I am yours for time and eternity.
Teach me to cast myself entirely
into the arms of your loving Providence with a lively,
unlimited confidence in your compassionate, tender pity.
Grant, O most merciful Redeemer,
that whatever you ordain or permit may be acceptable to me.
Take from my heart all painful anxiety;
let nothing sadden me but sin, nothing delight me but
the hope of coming to the possession of You,
my God and my all, in your everlasting kingdom. Amen.