Surah An-Nasr

إِذَا جَآءَ نَصۡرُ اُ۬للَّهِ وَاَلۡفَتۡحُ

Once Allah´s help _ and with it, the victory _ arrives

وَرَأَيۡتَ اَ۬لنَّاسَ يَدۡخُلُونَ فِي دِينِ اِ۬للَّهِ أَفۡوَاجࣰ ا

You shall see people throng (and embrace) the religion of Allah in large numbers

فَسَبِّحۡ بِحَمۡدِ رَبِّكَ وَاَسۡتَغۡفِرۡهُۚ إِنَّهُۥ كَانَ تَوَّابَۢا

So chant the praises of your Lord, and beg His forgiveness. Of course, it is really He Who accepts repentance and grants forgiveness