رَبَّنَا اغْفِرْ لَنَا ذُنُوبَنَا وَإِسْرَافَنَا فِي أَمْرِنَا وَثَبِّتْ أَقْدَامَنَا وَانْصُرْنَا عَلَى الْقَوْمِ الْكَافِرِينَ
Transliteration
Rabbanaghfir lana dhunubana wa israfana fi amrina wa thabbit aqdamana wansurna 'alal-qawmil-kafirin
English meaning
Our Lord, forgive us our sins and the excess in our affairs, plant our feet firmly, and grant us victory over the disbelieving people.
When is it recited?
For steadfastness and victory.
Source
Al-i Imran 3/147