Definition of xenophobic:

an unreasonable fear or hatred of foreigners or strangers or of that which is foreign or strange.

Context: West, Bing and Cohen, Eliot. “Our Only Hope”, Wall Street Journal, Jan 8 2007:

Stripped of their dominance but otherwise untouched by the war, the Sunnis supported an insurgency led by Saddam loyalists and fueled by xenophobic religiosity.