Portion of a Display Screen with an Icon

FIG. 1 is a front view of a first embodiment of a portion of a display screen with an icon showing our new design;

FIG. 2 is a front view of a second embodiment thereof;

FIG. 3 is a front view of a third embodiment thereof; and,

FIG. 4 is a front view of a fourth embodiment thereof.

The dot-dash broken lines in the drawings illustrate a portion of the display screen and form no part of the claimed design.