I claim the ornamental design for the display screen portion with icon, as shown and described.
FIG. 1 is a front view of a display screen portion with icon, as showing my new design; and,
FIG. 2 is a top view of a display screen portion with icon showing my new design depicted on a touch sensitive mobile device's display screen.
The broken lines in FIGS. 1 and 2 showing: an exterior square with rounded corners; the portion of the display screen; and the touch sensitive mobile device are for illustrative purposes only and form no part of the claimed design. The broken lines in FIGS. 1 and 2 depicting the border of the interior square with rounded corners; the horizontal and rectangular lines in the center of the notebook hole; the horizontal and rectangular lines generally in the center of the icon; and the ribbon in the bottom right corner of the square with rounded corners are for illustrative purposes only and form no part of the claimed design.