سُبْحَانَكَ اللَّهُمَّ رَبَّنَا وَبِحَمْدِكَ اللَّهُمَّ اغْفِرْلِي

How perfect You are O Allāh, our Lord and I praise You. O Allāh, forgive me.

Referencia: Al-Bukhārī (#794, 1/99) and Muslim (#484, 1/350).