Four ex-Dallas IHOP managers will file a suit today against the pancake chain, alleging they were fired for being Muslim.

Lawyer James Vagnini told The Post that Joseph Huessin and the others also plan to sue IHOP franchisee Anthraper Investments. Anthraper and IHOP denied the charges.

The Equal Employment Opportunity Commission investigated and found there was cause to believe the IHOP managers were harassed, Vagnini said. The EEOC doesn’t comment on investigations.