Dua for host when they offer you iftar to break your fast
ABUDAWUD 3854:
from Anas —
The Prophet ﷺ came to Saad b. Ubadah, who brought bread and oil, and he ate. Then the Prophet ﷺ said:
"afṭara ʿindakumu al-ṣāʾimūn, wa-akala ṭaʿāmakumu al-abrār, wa-ṣallat ʿalaykumu al-malāʾikah"
(May those who fast break their fast with you, may the righteous eat your food, and may the angels make dua for you.)
أبو داود ٣٨٥٤:
عن انس —
أَنَّ النَّبِيَّ ﷺ جَاءَ إِلَى سَعْدِ بْنِ عُبَادَةَ فَجَاءَ بِخُبْزٍ وَزَيْتٍ فَأَكَلَ ثُمَّ قَالَ النَّبِيُّ ﷺ:
«أَفْطَرَ عِنْدَكُمُ الصَّائِمُونَ وَأَكَلَ طَعَامَكُمُ الأَبْرَارُ وَصَلَّتْ عَلَيْكُمُ الْمَلاَئِكَةُ».