Portion of a shoe outsole

FIG. 1 is a plan view of a portion of a shoe outsole showing my new design;

FIG. 2 is a lateral front perspective view thereof; and,

FIG. 3 is a lateral rear perspective view thereof.

Throughout the views, the small curved broken lines on the claimed subject matter and the uneven broken line showings of the remainders of the shoes are for illustrative purposes only and form no part of the claimed design.