رَبَّنَا آتِنَا فِي الدُّنْيَا حَسَنَةً وَفِي الْآخِرَةِ حَسَنَةً وَقِنَا عَذَابَ النَّارِ
O our Rabb, grant us good in this world and good in the hereafter and save us from the punishment of the fire (of Jahannam)
The word Rab-banaa is a great word.
Hadrat Shah Hakeem Muhammad Akhtar Saheb explains that little children call unto their fathers for any problems by calling them Abba. However, many of us have lost our Abba (father). For such people, they have someone that is more than a father and that is their Rabba.