اَللَّهُمَّ أَنْتَ رَبُّهَا، وَأَنْتَ خَلَقْتَهَا، وَأَنْتَ هَدَيْتَهَا لِلْإِسْلَامِ، وَأَنْتَ قَبَضْتَ رُوْحَهَا، وَأَنْتَ أَعْلَمُ بِسِرِّهَا وَعَلَانِيَتِهَا، جِئْنَا شُفَعَاءَ فَاغْفِرْ لَهَا

Alla-humma, anta rabbuhaa, wa anta khalaqtahaa, wa anta hadaitahaa lil islaam, wa anta qabadta ru'hahaa, wa anta a'lamu bisirriha wa 'ala-niyatihaa, ji'na shufa'a-a fagfir laha

O Allah, You are his Lord, You have created him, You have shown him the way to Islam, You have accepted his soul, You know all his open and secrets. We have come to intercede for him, so forgive him.

Reference: Hasan (Ibn Hajar). Ar-rabbaniyah 4/176