Dua When Dining at Someone's House

اللَّهُمَّ بَارِكْ لَهُمْ فِيمَا رَزَقْتَهُمْ ، وَاغْفِرْ لَهُمْ وَارْحَمْهُمْ

Allahumma barik lahum feema razaqtahum, waghfir lahum, war hamhum

Pronunciation: O Allah! Bless them in what You have provided for them, and forgive them and have Mercy on them.

Reference: Muslim 3:1615