Feminism's main critique of religion is that it is patriarchal.

Feminism

A movement for gender equality, advocating for women's rights on the grounds of political, social, and economic equality to men.

Religion

A set of beliefs, practices, and moral values that involves the worship of a higher power or supernatural being(s).

Patriarchal

Describing a social system where men hold primary power and predominate in roles of leadership, moral authority, and control of property.