When the Prophet (ﷺ) wanted to say farewell to an army, he would say: I entrust to Allah your religion, what you are responsible for, and your final deeds.
Reference: Sunan Abi Dawud 2601 In-book : Book 15, Hadith 125 English translation : Book 14, Hadith 2595
Help us gift a modern, ad-free Islamic application for the Muslim Ummah. Your donation will be recorded as Sadaqah Jariyah in your book of deeds, In Sha Allah.