اللَّهُمَّ ارْحَمْنِي بِالْقُرْآنِ وَاجْعَلْهُ لِي إِمَامًا وَنُورًا وَهُدًى وَرَحْمَةً
Allahummar-hamni bil-Quran waj'alhu li imaman wa nuran wa hudan wa rahmah
O Allah, have mercy on me through the Quran, and make it for me a guide, a light, a source of guidance, and a mercy.
It is Sunnah to make du'a after completing a reading of the entire Quran (khatm). Ramadan is when many Muslims complete one or more readings. This is one of the recommended du'as — asking Allah to make the Quran transform your life, not just words you recited.
Related Du'as
اللَّهُمَّ تَقَبَّلْ مِنَّا رَمَضَانَ وَأَعِنَّا عَلَى صِيَامِ سِتٍّ مِنْ شَوَّالٍ
O Allah, accept our Ramadan and help us fast six days of Shawwal.
Sahihذَهَبَ الظَّمَأُ وَابْتَلَّتِ الْعُرُوقُ وَثَبَتَ الْأَجْرُ إِنْ شَاءَ اللَّهُ
The thirst is gone, the veins are moistened, and the reward is confirmed, if Allah wills.
Hasanاللَّهُمَّ صَلِّ عَلَى مُحَمَّدٍ وَعَلَى آلِ مُحَمَّدٍ كَمَا صَلَّيْتَ عَلَى إِبْرَاهِيمَ وَعَلَى آلِ إِبْرَاهِيمَ إِنَّكَ حَمِيدٌ مَجِيدٌ
O Allah, send blessings upon Muhammad and the family of Muhammad, as You sent blessings upon Ibrahim and the family of Ibrahim. Indeed, You are Praiseworthy and Glorious.
Sahihوَبِصَوْمِ غَدٍ نَوَيْتُ مِنْ شَهْرِ رَمَضَانَ
I intend to fast tomorrow in the month of Ramadan.
Hasan