سُبْحَانَكَ اللَّهُمَّ وَبِحَمْدِكَ، أَشْهَدُ أَنْ لَا إِلَٰهَ إِلَّا أَنْتَ، أَسْتَغْفِرُكَ وَأَتُوبُ إِلَيْكَ
Subhanaka Allahumma wa bihamdika, ash-hadu an la ilaha illa anta, astaghfiruka wa atubu ilayk
Glory be to You, O Allah, and praise be to You. I bear witness that there is no deity but You. I seek Your forgiveness and repent to You.
Can also be said after completing wudu
This comprehensive dua combines glorification, testimony, seeking forgiveness and repentance.