رَبَّنَآ ءَاتِنَا فِى ٱلدُّنْيَا حَسَنَةًۭ وَفِى ٱلْءَاخِرَةِ حَسَنَةًۭ وَقِنَا عَذَابَ ٱلنَّارِ
Rabbana atina fid-dunya hasanatan wa fil-akhirati hasanatan wa qina 'adhaban-nar
Our Lord! Give unto us in the world that which is good and in the Hereafter that which is good, and guard us from the doom of Fire.
Anas reported that this was the dua the Prophet ﷺ made most often (Sahih al-Bukhari, Sahih Muslim).