Arabic
رَبِّ اِنّٖٓي اَعُوذُ بِكَ اَنْ اَسْـَٔلَكَ مَا لَيْسَ لٖي بِهٖ عِلْمٌؕ وَاِلَّا تَغْفِرْ لٖي وَتَرْحَمْنٖٓي اَكُنْ مِنَ الْخَاسِرٖينَ
Meaning
My Lord, I seek refuge in You from asking that of which I have no knowledge. And unless You forgive me and have mercy upon me, I will be among the losers.
Source
The Holy Qur'an11:47