Duas for witr and qunut. The du'a the Prophet ﷺ taught for the witr
The Prophet ﷺ taught his grandson al-Hasan words to say in the witr prayer, sought refuge in Allah's pleasure at the end of his witr, and glorified the King, the Most Holy, after its salam.
3 sourced Du'as Arabic, transliteration, meaning, and source
Allahumma-hdini fiman hadayt, wa 'afini fiman 'afayt, wa tawallani fiman tawallayt, wa barik li fima a'tayt, wa qini sharra ma qadayt, fa-innaka taqdi wa la yuqda 'alayk, innahu la yadhillu man walayt, wa la ya'izzu man 'adayt, tabarakta rabbana wa ta'alayt
“O Allah, guide me among those You have guided, grant me well-being among those You have granted well-being, take me into Your care among those You have taken into Your care, bless me in what You have given, and protect me from the evil of what You have decreed. You decree, and none decrees over You. Whoever You befriend is never humiliated, and whoever You oppose is never honoured. Blessed are You, our Lord, and Exalted.”
Sunan Abi Dawud 1425 (sahih), Sunan an-Nasa'i 1745 (sahih), Sunan Ibn Majah 1178 (sahih)
The Prophet ﷺ taught this to his grandson al-Hasan ibn 'Ali to say in the witr.
Allahumma inni a'udhu biridaka min sakhatik, wa bimu'afatika min 'uqubatik, wa a'udhu bika mink, la uhsi thana'an 'alayk, anta kama athnayta 'ala nafsik
“O Allah, I seek refuge in Your pleasure from Your anger, and in Your pardon from Your punishment, and I seek refuge in You from You. I cannot count Your praises. You are as You have praised Yourself.”
Sahih Muslim 486
'A'ishah found the Prophet ﷺ in prostration at night saying this (Sahih Muslim 486). He ﷺ also said it at the end of his witr (Sunan Abi Dawud 1427, Jami at-Tirmidhi 3566, sahih).