FIG. 1 is a front elevation view of a grill guard of an automobile, showing our new design;
FIG. 2 is a front right perspective view;
FIG. 3 is a front left perspective view;
FIG. 4 is a right side elevation view;
FIG. 5 a left side elevation view; and,
FIG. 6 is a top plan view.
The broken lines shown are for illustrative purposes only and form no part of the claimed design.