Applying a film over a surface that curves in more than one axis is going to be difficult without creasing.
It is also going to compromise optical clarity.
Since it shattered when shot, it is likely to shatter with a pointed edge which would possibly puncture the film on the inner edge making the tensile strength of the film compromised which could be a massive issue if there several incoming rounds still in the air coming your way.
Laminating it with a film could hold the broken shards in place, but it would depend on the materials and situation, testing it to a suitable level wou