The ornamental design for an exteriorprotectivecover for automobile roof, as shown.
FIG. 1 is a perspective view of an exterior protective cover for automobile roof;
FIG. 2 is an isometric view thereof;
FIG. 3 is a front view, with a rear view being a mirror image thereof;
FIG. 4 is a right side view, with a left side view being a mirror image thereof;
FIG. 5 is a top view thereof; and,
FIG. 6 is a bottom view thereof.
For convenience of illustration, the layer on the bottom surface of the design that contacts the automobile roof as shown in FIG. 6 is understood to represent a layer which continues across the bottom surface.