Islamophobic is the adjective: a comment, joke, law, film, or person that shows hate or strong fear of Muslims. It has the same weight as Islamophobia. People put it in front of words like remark, attack, stereotype, or policy. As with the noun, speakers argue about the edge: some use it only for hostility toward Muslim people; some use it more widely. In careful talk, you describe the act or the words, not just slap the label on anyone who disagrees.