Answer: "Subhānak allāhumma wa bihamdik, ash-hadu allā ilāha illā ant, astaghfiruka wa atūbu ilayk" (Glory and praise be to You, O Allah. I testify that there is no god but You. I seek Your forgiveness and I repent to You). [Narrated by Abu Dāwūd, At-Tirmidhi, and others]