Are the Prophet Lot and Prophet Abraham Arab or Israelites?

Answer 1

They are neither, in the strictest sense. Arabs did not leave the Arabian Peninsula until the 600s B.C.E. (and then not en masse until the Conquests of Omar in the 640s C.E.) and both Abraham and lot were born in Ur in Mesopotamia. Secondly Arabs trace their lineage back to Ishmael, Abraham's son which would mean that while he was the father of the Arab progenitor, he himself would not be Arab.

As for being Israelites, while Abraham would eventually spawn the Israelites by way of Isaac, the same point holds that he would not be Israelite on the grounds established above for the Arabs.

This is one reason that Judaism, Islam and Christianity are collectively called the Abrahamic Religions. Their origin myths all claim Abraham as a progenitor.

Ethnically, most people believe Abraham and Lot to be Chaldean, a Mesopotamian ethnicity that dominated the southern Mesopotamian region.