Prayer when u offer service in way of Allah

Rabbana taqabbal minna innaka anta alssameeAAu alAAaleemu.

"Our Lord! Accept (this service) from us: For Thou art the All-Hearing, the All-knowing.

Reference: Surah 2 Al-Baqara V127

Background: This was prayed by Abraham(PBUH) and Ismail(PBUH) when they raised the foundations of the House(Kaaba of Mecca)