It was narrated that al-"Abbas said: I came to the Messenger of Allah (ﷺ) and said:

O Messenger of Allah, teach me something that I may say in my supplication. He said: "Ask Allah for pardon and well being." Then I came to him another time and said: O Messenger of Allah, teach me something that I may say in my supplication. He said: “O "Abbas, O uncle of the Messenger of Allah (ﷺ), ask Allah for wellbeing in this world and in the Hereafter.”