Present essay states a problem of reaction demonstrated by orthodox and catholic clergy towards French invasion during Napoleonic wars with Spain (1808 – 1814) and Russia (1812 – 1813). This research has been carried out using methodology of comparative historical analysis. The estimation of similarities and differences in the activities of Russian and Spanish clergy faced to the foreign enemy is given. Taking as an example both monarchies, the role and impact of religious propaganda aimed to creation of the “Enemy´s Image” in order to consolidate confessional absolutist monarchy, is studied.