Qatada asked Anas which Supplication Allah's Apostle (ﷺ) frequently made. He said
The supplication that he (the Prophet made very frequently is this:" O Allah, grant us the good in this world and the good in the Hereafter and save us from the torment of Hell-Fire." He (Qatada) said that whenever Anas had to supplicate he made this very supplication, and whenever he (intended) to make another supplication he (inserted) this very supplication in that.
Anas reported that Allah's Messenger (ﷺ) used to supplicate (in these words)
" Our Lord, grant us the good in this world and the good in the Hereafter and save us from the torment of Hell Fire."