Chapter on the Supplication for the One Invited and the Guest to the Hosts When Finished Eating’

From Imam an-Nawwawi’s al-Adhkar:

Question: Chapter on the Supplication for the One Invited and the Guest to the Hosts when finished eating

Answer : اللهم بارك لهم فيما رزقتهم ، واغفر لهم وارحمهم

Allahumma baarik lahum fima razaqtahum wagfir lahum warhamhum

‘Oh Allah, bless them in what You provided for them and forgive them and bestow mercy upon them.’