The two readings are essentially identical, though the latter is arguably more explicit in negating all fear. Both could be understood to mean that the addressees will not experience fear; an alternative understanding is that there need be no fear concerning them.
He has revealed to you ˹O Prophet˺ the Book in truth, confirming what came before it, as He revealed the Torah and the Gospel
Maelezo:
The two readings are essentially identical, though the latter is arguably more explicit in negating all fear. Both could be understood to mean that the addressees will not experience fear; an alternative understanding is that there need be no fear concerning them.