Du'a when closing the eyes of the deceased

اللَّهُمَّ اغْفِرْ لِفُلَانٍ وَارْفَعْ دَرَجَتَهُ فِي الْمَهْدِيِّينَ، وَاخْلُفْهُ فِي عَقِبِهِ فِي الْغَابِرِينَ، وَاغْفِرْ لَنَا وَلَهُ يَا رَبَّ الْعَالَمِينَ، وَافْسَحْ لَهُ فِي قَبْرِهِ، وَنَوِّرْ لَهُ فِيهِ

Allahummaghfir li [say your loved one's name] warfa' darajatahu fil-mahdiyyin, wakhlufhu fi 'aqibihi fil-ghabirin, waghfir lana wa lahu ya Rabbal-'alamin, wafsah lahu fi qabrihi, wa nawwir lahu fih.

O Allah, forgive [say your loved one's name] and raise his rank among the rightly guided, and be a successor to whom he left behind, and forgive us and him, O Lord of the worlds. Make his grave spacious and illuminated for him.

Ṣaḥīḥ Muslim 920