Borrowed from the https://www.magiscenter.com/

If you or someone you know has any doubt of God’s existence a recommended prayer by Cardinal Gibbons, which he gave to a soul, which helped him gain the gift of faith is:

“Oh God, if You exist, make me know You.”

In the story, the freethinking soul said this prayer conscientiously and repeatedly over some time then gained the gift of faith in God.

God helps those who ask.