Dua 1
اَفْطَرَ عِنْدَكُمُ الصَّآئِمُوْنَ وَاَكَلَ طَعَامَكُمُ الْاَبْرَارُ وَصَلَّتْ عَلَيْكُمُ الْمَلَآئِكَةُ
May fasting people break their fast with you, may the righteous eat your food, and may the angels pray for you.
Sahih, Sunan Abi Dawud, no. (3854), Sunan Ibn Majah, no. (1747), and al-Albani graded it Sahih in Adab az-Zifaf (page 170).
No special link of this supplication with a fasting person, or with someone who gives a meal to break the fast, is established; rather it is general for anyone whom someone feeds. The narration that says the Prophet said these words after breaking his fast at someone's house is weak with those words; for details see: [Adab az-Zifaf of al-Albani (page 170)]