Anas (May Allah be pleased with him) reported:
The supplication most often recited by the Prophet (ﷺ) was: "Allahumma atina fid-dunya hasanatan, wa fil-akhirati hasanatan, wa qina 'adhab-annar (O our Rubb! give us in this world that which is good and in the Hereafter that which is good, and save us from the punishment of the Fire)."'[Al-Bukhari and Muslim].In the narration of Muslim it is added that whenever Anas supplicated, he used to beseech Allah with this Du'a.
App reference: Book 17, Hadith 3
Arabic/English book reference: Book 17, Hadith 1467