Invocation for someone you have spoken ill to

1. قَالَ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: (اللَّهُمَّ فَأَيُّمَا مُؤْمِنٍ سَبَبْتُهُ فَاجْعَلْ ذَلِكَ لَهُ قُرْبَةً إِلَيْكَ يَوْمَ القِيَامَةِ)

   (O Allah, to any believer whom I have insulted, let that be cause to draw him near to You on the Day of Resurrection.)