اللَّهُمَّ بَيِّضْ وَجْهِي يَوْمَ تَبْيَضُّ وُجُوهٌ وَتَسْوَدُّ وُجُوهٌ
Allahumma bayyid wajhi yawma tabyadduwujuhun wa taswaddu wujuh
Ee Allah, angaza uso wangu siku ambayo nyuso zitaangaa na nyuso zitakuwa giza.
While washing the face during wudu
This dua asks Allah for salvation on the Day of Judgment.