Verse 201 of Surah Al-Baqarah, one of the most repeated supplications in Islam.
It asks Allah for good in this world and good in the Hereafter, and for protection from the punishment of the Fire. The Prophet (peace be upon him) often made this dua, and it is recited constantly during Hajj, in prayer, and in everyday supplication for its balance between this life and the next.
- 2:201
وَمِنْهُم مَّن يَقُولُ رَبَّنَآ ءَاتِنَا فِى ٱلدُّنْيَا حَسَنَةًۭ وَفِى ٱلْءَاخِرَةِ حَسَنَةًۭ وَقِنَا عَذَابَ ٱلنَّارِ
Wa minhum mai yaqoolu rabbanaaa aatina fid dunyaa hasanatawn wa fil aakhirati hasanatanw wa qinaa azaaban Naar
waxaana ka mid ah Daka kuwo dhihi Eebow na sii adduunka wanaag, aakhirana nasii wanaag, nagana dheeree Cadaabka Naarta.