It was narrated from Ali bin Abi Talib that:
The Prophet (ﷺ) used to say at the end of witr: Allahumma inni audhu bi ridaka min sakhatika wa bi mu'afatika min uqubatika, wa audhu bika minka la uhsi thana'an 'alayka, anta kama athwart ala nafsik ( O Allah, I seek refuge in Your pleasure from Your wrath and in Your forgiveness from Your punishment. And I seek refuge in You from You; I cannot praise You enough; You are as You have praised Yourself.).