رَبَّنَا آتِنَا فِي الدُّنْيَا حَسَنَةً وَفِي الْآخِرَةِ حَسَنَةً وَقِنَا عَذَابَ النَّارِ
Purpose Ask Allah for comprehensive good and protection from Hellfire.
When to Use Read this often as a comprehensive Quranic dua.
Source Quran 2:201

Transliteration

Rabbana atina fid-dunya hasanah wa fil-akhirati hasanah wa qina `adhaban-nar.

Meaning

Our Lord, give us good in this world and good in the Hereafter, and protect us from the punishment of the Fire.