Dua in prostration — glorification and praise
سُبْحانَكَ اللّهُـمَّ رَبَّنا وَبِحَمْـدِكَ اللّهُـمَّ اغْفِرْ...
سُبْحانَكَ اللّهُـمَّ رَبَّنا وَبِحَمْـدِكَ اللّهُـمَّ اغْفِرْ لي
Subhanakal-lahumma rabbana wabihamdik, allahummagh-fir lee
Translation
How perfect You are O Allah, our Lord, and I praise You. O Allah, forgive me.
When to recite
Recited frequently by the Prophet during prayer in both bowing and prostration.
Source / Reference
Al-Bukhari 1/99, Muslim 1/350