What Anas answered when asked
Qatāda asked which supplication he ﷺ made most, and this was the reply.
اللَّهُمَّ آتِنَا فِي الدُّنْيَا حَسَنَةً وَفِي الآخِرَةِ حَسَنَةً وَقِنَا عَذَابَ النَّارِ
Allāhumma ātinā fi-d-dunyā ḥasanah, wa fi-l-ākhirati ḥasanah, wa qinā ʿadhāba-n-nār.
“O Allah, give us good in this world and good in the Hereafter, and protect us from the punishment of the Fire.”
Anas would include it in any supplication he made himself.
The full narration
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
Source
Ṣaḥīḥ Muslim · 6840
- Agreed upon as authentic (al-Bukhārī / Muslim)