Arab nativism
The notion that Arabs are true natives of all the many countries they have colonized. In Egypt this manifests as denial of the indigenousness of Copts, in Algeria of Kabyle and other Berber peoples, in Iraq and Syria of Assyrians and Chaldeans, and in Israel this manifests as the slogan "Jesus was Palestinian."
The aim of Arab nativism is to simultaneously erase the many indigenous peoples of the MENA and assert that only the colonizers are truly indigenous.