Reference : Hisn al-Muslim 232
اللَّهُمَّ لاَ تُؤَاخِذْنِي بِمَا يَقُولُونَ
وَاغْفِرْ لِي مَا لاَ يَعْلَمُونَ 
[وَاجْعَلْنِي خَيْرًا مِمَّا يَظُّنُّونَ]
Allāhumma lā tu'ākhidhnī bimā yaqūlūn, 
waghfir lī mā lā ya`lamūn
[waj`alnī khayran mimmā yaẓunnūn].


O Allah, do not call me to account for what they say
and forgive me for what they have no knowledge of 
[and make me better than they imagine].

Reference:
Al-Bukhari, Al-'Adabul-Mufrad no. 761. See Al-Albani, Sahih 
Al-'Adabul-Mufrad (no. 585). The portion between brackets if from 
Al-Bayhaqi, Shu'ab Al-Iman 4/228, and comes another account.

Chapter: For the one that have been praised