Authentic Supplication Number 96.

‘A’ishata  said: One day I noticed the absence of the Prophet  ([from the bed]), so I started looking for him, then my hand came in contact with the bottom of his feet, he was in the Mosque, his feet were propped up, and he was saying: ‘Allahumma ‘innee ‘a`outhu bi-ridhaka min sakhatika, wa bi-mu`afatika min `uqoobatica, wa ‘a`outhu bika minka, la ‘uhsee thana’an `alayka, ‘anta kama ‘athnayta `ala nafsika (114).

(114) I seek refuge in your approval from your anger, and in pardon granting from your punishment, and I seek refuge in You, from You, I could never praise Thee enough [as You deserve], You are as You have praised yourself.

Reported by Muslim, and is #79 in The Authentic of Good Sayings.