1- Regularly show your child love and compassion. Sometimes you have to compensate for this situation by showing your child more love and giving your child more emotional support.
2- Try to keep your child away from friends/peers who bully your child. It’s not good to keep your child in an environment where your child is bullied.
3- Read this verse on your child several times a day:
وَأَلْقَيْتُ عَلَيْكَ مَحَبَّةً مِّنِّي وَلِتُصْنَعَ عَلَىٰ عَيْنِي
Taha 39
B) In general reading this Du’a 4 times is effective:
اللهم اني اتوجه اليك بنبيك نبي الرحمة واهل بيته الذين اخترتهم على علمٍ على العالمين اللهم لين لي صعوبتها وحزونتها واكفني شرها فانك الكافي المعافي والغالب القاهر اللهم صل على محمد وال محمد