Dua for Sehri (Suhoor)
وَبِصَوْمِ غَدٍ نَّوَيْتُ مِنْ شَهْرِ رَمَضَانَ
Transliteration: Wa bisawmi ghadin nawaytu min shahri Ramadan
Translation: I intend to keep the fast for the month of Ramadan.
Reference: Widely circulated wording. The established basis is the intention before Fajr — Sunan Abi Dawud 2454
Dua for Iftar
اَللَّهُمَّ اِنِّى لَكَ صُمْتُ وَبِكَ اٰمَنْتُ وَعَلَيْكَ تَوَكَّلْتُ وَعَلٰى رِزْقِكَ اَفْطَرْتُ
Transliteration: Allahumma inni laka sumtu wa bika aamantu wa ‘alayka tawakkaltu wa ‘ala rizqika aftartu
Translation: O Allah! I fasted for You, and I believe in You, and I put my trust in You, and I break my fast with Your sustenance.
Reference: Sunan Abi Dawud 2358 — chain is mursal, graded weak. The best-authenticated iftar dua is “Dhahaba az-zama’u…” (Sunan Abi Dawud 2357, hasan)