The Messenger of Allah ﷺ taught me some words that I say during the witr. (The version of Ibn Jawwas has: I say them in the supplication of the witr.) They were: "O Allah, guide me among those Thou hast guided, grant me security among those Thou hast granted security, take me into Thy charge among those Thou hast taken into Thy charge, bless me in what Thou hast given, guard me from the evil of what Thou hast decreed, for Thou dost decree, and nothing is decreed for Thee. He whom Thou befriendest is not humbled. Blessed and Exalted art Thou, our Lord." (Using translation from Abū Dāʾūd 1425)  

قَالَ الْحَسَنُ بْنُ عَلِيٍّ عَلَّمَنِي رَسُولُ اللهِ ﷺ كَلِمَاتٍ أَقُولُهُنَّ فِي الْوِتْرِ فِي الْقُنُوتِ «اللهُمَّ اهْدِنِي فِيمَنْ هَدَيْتَ وَعَافِنِي فِيمَنْ عَافَيْتَ وَتَوَلَّنِي فِيمَنْ تَوَلَّيْتَ وَبَارِكْ لِي فِيمَا أَعْطَيْتَ وَقِنِي شَرَّ مَا قَضَيْتَ إِنَّكَ تَقْضِي وَلَا يُقْضَى عَلَيْكَ وَإِنَّهُ لَا يَذِلُّ مَنْ وَالَيْتَ تَبَارَكْتَ رَبَّنَا وَتَعَالَيْتَ»  

"The Messenger of Allah ﷺ taught me these words in witr. He said: Say: Allahumma ihdini fiman hadayta wa 'afini fiman afayta wa tawallani fiman tawallayta wa barik li fima a'tayta, wa qini sharra ma qadayta, fa innaka taqdi wa la yuqda 'alayk, wa innahu la yadhilluman walayta, tabarakta Rabbana wa at'alayt. Wa salla Allahu ala al-Nabi Muhammad (O Allah, guide me among those whom You have guided, pardon me among those You have pardoned, turn to me in friendship among those on whom You have turned in friendship, and bless me in what You have bestowed, and save me from the evil of what You have decreed. For verily You decree and none can influence You; and he is not humiliated whom You have befriended. Blessed are You, O Lord, and Exalted. And may Allah (SWT) send salah upon the Prophet Muhammad)'" (Using translation from Nasāʾī 1746)  

عَلَّمَنِي رَسُولُ اللهِ ﷺ هَؤُلَاءِ الْكَلِمَاتِ فِي الْوِتْرِ قَالَ قُلْ «اللهُمَّ اهْدِنِي فِيمَنْ هَدَيْتَ وَبَارِكْ لِي فِيمَا أَعْطَيْتَ وَتَوَلَّنِي فِيمَنْ تَوَلَّيْتَ وَقِنِي شَرَّ مَا قَضَيْتَ فَإِنَّكَ تَقْضِي وَلَا يُقْضَى عَلَيْكَ وَإِنَّهُ لَا يَذِلُّ مَنْ وَالَيْتَ تَبَارَكْتَ رَبَّنَا وَتَعَالَيْتَ وَصَلَّى الله عَلَى مُحَمَّدٍ النَّبِيِّ»