Arabic original
اللَّهُمَّ رَبَّ جِبْرَائِيلَ وَمِيكَائِيلَ وَإِسْرَافِيلَ فَاطِرَ السَّمَاوَاتِ وَالْأَرْضِ عَالِمَ الْغَيْبِ وَالشَّهَادَةِ أَنْتَ تَحْكُمُ بَيْنَ عِبَادِكَ فِيمَا كَانُوا فِيهِ يَخْتَلِفُونَ اهْدِنِي لِمَا اخْتُلِفَ فِيهِ مِنَ الْحَقِّ بِإِذْنِكَ إِنَّكَ تَهْدِي مَنْ تَشَاءُ إِلَى صِرَاطٍ مُسْتَقِيمٍ
English translation
O Allah, Lord of Jibrīl, Mīkāʾīl and Isrāfīl, Creator of the heavens and the earth, Knower of the unseen and the seen, You judge between Your slaves concerning that wherein they differ. Guide me in those matters about which there is dispute regarding the truth by Your Leave, for You are the One Who guides to the straight path.
English transliteration
Allāhumma rabba Jibrāʾīl wa-Mīkāʾīl wa-Isrāfīl fāṭir al-samāwāti wa-al-arḍi ʿālim al-ghaybi wa-al-shahādati anta taḥkumu bayna ʿibādika fīmā kānū fīhi yakhtalifūn ihdinī limā-khtulifa fīhi min al-ḥaqqi bi-idhnika innaka tahdī man tashāʾu ilá ṣirāṭin mustaqīm
Source Muslim