One the shortest and most comprehensive ‘dua’ that covers worldly affairs as well as those of ‘here-after’ is;
رَبَّنَآ ءَاتِنَا فِى ٱلدُّنۡيَا حَسَنَةً۬ وَفِى ٱلۡأَخِرَةِ حَسَنَةً۬ وَقِنَا عَذَابَ ٱلنَّارِ
The peculiarity of this supplication is that, it is the only ‘dua’ recommended by Prophet Muhammad (Peace be upon him) to recite between ‘Rukn e Yamani’ and ‘Hajr Aswad’ (The sacred Black stone) while circumambulation ‘tawaf’ around ‘Hloy Ka’aba’.
It is better that one should supplicate in his/her own mother tongue so that one may understand what he/she is asking from Allaah swt. All languages belong to Almighty Allaah.