From Sahih Muslim (Hadith 6900):
Abu Huraira reported that when Allah's Messenger (ﷺ) set out on a journey in the morning, he used to say:" A listener listened to our praising Allah (for) His goodly trial of us. Our Lord! acompany us, guard us and bestow upon us Thy grace. I am seeker of refuge in Allah from the Fire
Reference: Muslim 6900