سُبْحَانَ رَبِّيَ الْأَعْلَى، اللَّهُمَّ لَكَ سَجَدْتُ وَبِكَ آمَنْتُ وَلَكَ أَسْلَمْتُ، سَجَدَ وَجْهِيَ لِلَّذِي خَلَقَهُ وَصَوَّرَهُ وَشَقَّ سَمْعَهُ وَبَصَرَهُ
Transliteration
Subhana Rabbiyal-a'la, Allahumma laka sajadtu wa bika amantu wa laka aslamtu, sajada wajhiya lilladhi khalaqahu wa sawwarahu wa shaqqa sam'ahu wa basarah
English meaning
Glory be to my Lord, the Most High. O Allah, to You I have prostrated, in You I have believed, and to You I have submitted. My face has prostrated to the One who created it and fashioned it, and opened its hearing and sight.
When is it recited?
Recited during the prostration of gratitude when blessed with something good.
Source
Muslim, Musafirun 201, 771; Abu Dawud, Salat 361, 1414