اللَّهُمَّ ثَبِّتْ قَدَمَيَّ عَلَى الصِّرَاطِ يَوْمَ تَزِلُّ فِيهِ الْأَقْدَامُ
Allahumma thabbit qadamayya 'alas-sirati yawma tazillu fihil-aqdam
Allaahumma ku adkee cagahayga buundada (Siraadka) maalinta ay cagahu siibmayaan.
While washing the feet during wudu
This dua asks for firmness when crossing the Sirat bridge on the Day of Judgment.