#1046
أَعـوذُ بِاللهِ يَسْتَعِيذُ بِاللَّهِ يَنْتَهِي عَمَّا شك فِيهِ
Transliteration
A`ūdhu billāh
Translation
(Say:) I seek refuge in Allah. (Then you should desist from doing what you are in doubt about.)
Dua #1046•Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 6/336, Muslim 1/120.
For one afflicted with doubt in his faith
Hisnul Muslim