Reference : Hisn al-Muslim 116
اللّهُـمَّ اهْـدِنـي فـيمَنْ هَـدَيْـت،
وَعـافِنـي فـيمَنْ عافَـيْت، 
وَتَوَلَّـني فـيمَنْ تَوَلَّـيْت،
وَبارِكْ لـي فـيما أَعْطَـيْت،
وَقِـني شَرَّ ما قَضَـيْت،
فَإِنَّـكَ تَقْـضي وَلا يُقْـضى عَلَـيْك ،
إِنَّـهُ لا يَـذِلُّ مَنْ والَـيْت،
[ وَلا يَعِـزُّ مَن عـادَيْت ]،
تَبـارَكْـتَ رَبَّـنا وَتَعـالَـيْت
Allāhumma’hdinī fī man hadayt, 
wa `āfinī fī man `āfayt, 
wa tawallanī fī man tawallayt, 
wa bārik lī fī mā a`atayt, 
wa qinī sharra mā qaḍayt, 
fa innaka taqḍī wa lā yuqḍā `alayk, 
innahu lā yadhillu man wālayt, 
[wa lā ya`izzu man `ādayt] , 
tabārakta Rabbanā wa ta`ālayt.


O Allah, guide me with those whom You have guided, 
and strengthen me with those whom You have given strength.
Take me to Your care with those whom You have taken to Your care.
Bless me in what You have given me.
Protect me from the evil You have ordained.
Surely, You command and are not commanded,
and none whom You have committed to Your care shall be humiliated
[and none whom You have taken as an enemy shall taste glory].
You are Blessed, Our Lord, and Exalted.

Reference:
Abu Dawud, Ibn Majah, An-Nasa'i, At-Tirmidhi, Ahmad, Ad-Darimi, Al-Hakim, 
and Al-Bayhaqi. See also Al-Albani, Sahih At-Tirmidhi 1/144, Sahih Ibn 
Majah 1/194, and 'Irwa'ul-GhaW. 2/ 172.

Chapter: Qunoot Al-Witr