يَسْتَعِيذُ بِاللَّهِ. يَنْتَهِي عَمَّا شك فِيهِ.
A`ūdhu billāh
(Say:) I seek refuge in Allah. (Then you should desist from doing what you are in doubt about.)
Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 6/336, Muslim 1/120.
دُعَاءُ مَنْ أَصَابَهُ شَكٌّ فِي الْإِيمَانِ
For one afflicted with doubt in his faith
يَقُولُ" آمَنْتُ بِاللَّهِ وَرُسُلِهِ"
Āmantu billāhi wa Rusulih.
(Say:) I believe in Allah and His Messengers.
Muslim, 1/119-20.
يقرأ قوله تعالى ((هُوَ الأوَّلُ، وَالآخِـرُ، وَالظّـاهِـرُ، وَالْبـاطِـنُ، وَهُوَ بِكُلِّ شَيءٍ عَلـيم
Huwa ‘l-Awwalu wa ‘l-Ākhir, waẓ-Ẓāhiru wal-Bāṭin, wa huwa bikulli shay'in `Alīm.
(Recite the Ayat) He is the First and the Last, the Most High and the Most Near. And He is the Knower of all things (in Arabic).
Al-Hadid 57:3, Abu Dawud 4/329. Al-Albani graded it good in SahihAbu Dawud, 3/962.
Related
For anxiety and sorrowFor one in distressUpon encountering an enemy or those of authoritySettling a debtFor one whose affairs have become difficultFor expelling the devil and his whisperingsWhen visiting the sickExcellence of visiting the sickWhen the sick have renounced all hope of lifeFor one afflicted by a calamityTo the debtor when his debt is settledFor fear of shirkThe scorn of ascribing things to evil omensWhen feeling some pain in the bodyWhen in fear of afflicting something with an (evil) eye from oneselfTo ward off the plot of the rebellious devils