שָׁפְטֵ֤נִי אֱלֹהִ֨ים ׀ וְרִ֘יבָ֤ה רִיבִ֗י מִגּ֥וֹי לֹא־חָסִ֑יד מֵ֤אִישׁ־מִרְמָ֖ה וְעַוְלָ֣ה תְפַלְּטֵֽנִי׃
Rashi on Psalms
against an unkind nation That is Ishmael, who dwelt between two righteous men [Abraham and Isaac] and did not learn from their deeds.