وَلَمْ يَكُنْ لَهُ كُفُواً أَحَدٌ يَا…
Source: Source: duas.org · ramadan-sahar-dua-ya-uddati
wa lam yakun lahu kufwan ahadun ya man yu`ti man sa'alahu tahannunan minhu wa rahmatan wa yabtadi'u bilkhayri man lam yas'alhu tafaddulan minhu wa karaman bikaramika aldda'imi salli `ala muhammadin wa ali muhammadin wa hab li rahmatan wasi`atan jami`atan ablughu biha khayra alddunya wal-akhirati allahumma inni astaghfiruka lima tubtu ilayka minhu thumm `udtu fihi wa astaghfiruka likulli khayrin aradtu bihi wajhaka fakhalatani fihi ma laysa laka
and there is none like to Him O He Who confers upon one who beseeches Him on account of His sympathy and mercy, and initially grants welfare to those who have not asked for it, on account of His liberality and generosity! I beseech You in the name of Your endless generosity to bless Muhammad and the Household of Muhammad and bestow upon me with mercy—vast and comprehensive— by which I can win the welfare of this world as well as the Next World. O Allah, I implore for Your forgiveness of the sins from which I had repented to You but I committed them again. I implore for Your forgiveness of my righteous acts that although I intended them purely for Your sake, some purposes that are not intended for You intruded upon them.
Reference / Source
Source: duas.org · ramadan-sahar-dua-ya-uddati