Qatada asked Anas which supplication the Prophet ﷺ made most often.Anas replied, "The supplication the Messenger of Allah ﷺ made most often was, 'O Allah, our Lord, grant us good in this world and good in the hereafter, and protect us from the punishment of the Fire.'"Whenever Anas wished to make a supplication, he would say this one, and whenever he wished to include a supplication within another, he would include this one in it.
حدثنا إسماعيل
سأل قتادة أنسا أي دعوة كان أكثر يدعو بها النبي ﷺ قال كان أكثر دعوة يدعو بها رسول الله ﷺ اللهم ربنا آتنا في الدنيا حسنة وفي الآخرة حسنة وقنا عذاب النار وكان أنس إذا أراد أن يدعو بدعوة دعا بها وإذا أراد أن يدعو بدعاء دعا بها فيه
Its chain of transmission is sahih. Bukhari related the hadith 8/103, in the chapters on supplications, on the saying of the Prophet ﷺ, "Our Lord, give us in this world," Muslim 4/2070, no. 2690, in the chapter on remembrance, on the merit of supplicating with "O Allah," and Tirmidhi 5/521, no. 3487, who said, hasan sahih gharib.