Nemesis is the "righteous indignation" evoked by a lack of aidos in another person. The Trojans--and especially Hector, the hero of aidos--feel nemesis toward Paris when he hangs back from fighting in the war he is chiefly responsible for starting.

Nemesis is the feeling of righteous indignation aroused especially by the sight of the wicked in undeserved prosperity

A personified emotion from Greek mythology.