40 Rabbanas is an Islamic application including 40 invocations (Dua) of the Noble Quran. These 40 invocations begin by "Rabbana" (Our Lord) or "Rabbi" (My Lord).
These 40 supplications of the Noble Quran are intended for every Muslim, who want to learn supplications (Dua) through which Prophets, Messengers, men of science implored Allah until obtain His help.