Du'a for Laylat al-Qadr: apportionment and a blessed ending

اللَّهُمَّ إِنْ كَانَتْ هَذِهِ لَيْلَةَ الْقَدْرِ فَاقْسِمْ لِي فِيهَا خَيْرَ مَا قَسَمْتَ، وَاخْتِمْ لِي فِي قَضَائِكَ خَيْرَ مِمَّا خَتَمْتَ، وَاخْتِمْ لِي بِالسَّعَادَةِ فِيمَنْ خَتَمْتَ، اللَّهُمَّ اجْعَلِ اسْمِي وَذُرِّيَّتِي فِي هَذِهِ اللَّيْلَةِ فِي السُّعَدَاءِ، وَرُوحِي مَعَ الشُّهَدَاءِ، وَإِحْسَانِي فِي عِلِّيِّينَ، وَإِسَاءَتِي مَغْفُورَةً

Allāhumma in kānat hādhihi laylata al-qadri faqsim lī fīhā khayra mā qasamta, wakhtim lī fī qaḍā'ika khayra mimmā khatamta, wakhtim lī bis-sa'ādati fīman khatamta, Allāhumma ij'al ismī wa dhurriyyatī fī hādhihi al-laylati fis-su'adā'i, wa rūḥī ma'ash-shuhadā'i, wa iḥsānī fī 'illiyyīna, wa isā'atī maghfūrah

O Allah, if this night is Laylat al-Qadr, apportion for me in it the best of what You have apportioned, seal for me in Your decree better than what You have sealed, and seal my life with happiness among those You have sealed. O Allah, place my name and my offspring on this night among the blessed, my soul with the martyrs, my good deeds in 'Illiyyin (the highest register), and make my wrongdoings forgiven.

A general supplication, not a narration from the Prophet (peace be upon him). Part of a night-prayer supplication on Laylat al-Qadr.