بسم الله الرحمن الرحيم
(Fatwa: 1213/1212/M=10/1434)
Niyah means the intention of heart and one eats sehri with the intention of fasting. Then eating sehri is tantamount to intention. There is no need of intention in words separately but if one reads the said dua in sehri then it is lawful and better.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
