Here is a dua to protect you against backbiters and gossipers. People can insult us and hurt our feelings. Say this dua to protect yourself against them.
This dua is recited by Saad Al Qureshi.
اللّٰهمّ اجْعَلْنِي خَيْرًا مِمَّا يَظُنُّونَ، وَاغْفِرْ لِي مَا لا يَعْلَمُونَ، وَلا تُؤَاخِذْنِي بِمَا يَقُولُونَ برحمتك يا أرحم الراحمين
O Allah! Make Me to be better than what they think of us! Forgive me that which they do not know! Do not blame me for what they say! By Your mercy O Most Merciful!