اَللَّهُمَّ انْفَعْنِي بِمَا عَلَّمْتَنِي وَعَلِّمْنِي مَا يَنْفَعُنِي وَزِدْنِي عِلْمًا

Allahum-manfa'ni bima 'al-lamtani, wa 'al-limni maa yanfa'uni, wa zidni 'ilma

Oh Allah, benefit me with what You have taught me and teach me what benefits me, and increase me in knowledge.

Reference: Sahih. Tirmidhi: 3599