Dua For the Deceased

اللَّهُمَّ اغْفِرْ لَهُ الَّلهُمَّ ثَبِّتْهُ

Allaahum-maghfir lahu Allaahumma thabbithu

Pronunciation: O Allah, forgive him. O Allah, strengthen him.

Reference: Abu Dawud 3:315

اللهُـمِّ اغْفِـرْ لِـ-فُلاَنٍ (باسـمه)وَارْفَعْ دَرَجَتََـهُ فِي المَهْـدِيّيـنَ ، وَاخْـلُفْـهُ في عَقِـبِهِ في الغَابِِـرِينَ، وَاغْفِـرْ لَنَا وَلَـهُ يا رَبَّ العـالَمـين، وَافْسَـحْ لَهُ في قَبْـرِهِ وَنَـوِّرْ لَهُ فِيهِ

Allaahummaghfir li (name of the person) warfa' darajatahu fil-mahdiyyeena, wakhlufhu fee 'aqibihi fil-ghaabireena , waghfir-lanaa wa lahu yaa Rabbal-'aalameena, wafsah lahu fee qabrihi wa nawwir lahu feehi

Pronunciation: O Allah, forgive [name of the person] and elevate his station among those who are guided. Send him along the path of those who came before, and forgive us and him, O Lord of the worlds. Enlarge for him his grave and shed light upon him in it.

Reference: Muslim 2:634