A dua we keep on the wall:
رَبَّنَا اغْفِرْ لَنَا وَلِإِخْوَانِنَا الَّذِينَ سَبَقُونَا بِالْإِيمَانِ وَلَا تَجْعَلْ فِي قُلُوبِنَا غِلًّا لِّلَّذِينَ آمَنُوا رَبَّنَا إِنَّكَ رَءُوفٌ رَّحِيمٌ
"Our Lord, forgive us and our brothers who preceded us in faith, and put not in our hearts [any] resentment toward those who have believed. Our Lord, indeed You are Kind and Merciful."
— Quran 59:10 · Surah Al-Hashr →