رَبَّنَا تَقَبَّلْ مِنَّا إِنَّكَ أَنْتَ السَّمِيعُ الْعَلِيمُ
Transliteration
Rabbana taqabbal minna innaka antas-sami'ul-'alim
English meaning
Our Lord, accept this from us. Indeed, You are the Hearing, the Knowing.
When is it recited?
Asking acceptance of acts of worship.
Source
Al-Baqarah 2/127