Introduction. In the article, the author analyzes the views of the leading ideologues of the concept of pan-Slavism in the Russian Empire, who, according to Ivan Mirchuk, had a decisive influence on the formation of the modern ideological mythologeme of the hegemony of the Russian state on a planetary scale and contributed to the deepening of ideological differences between Western and Eastern civilizations. Using the example of the arguments of representatives of the Slavophile stream of Russian Pan-Slavism regarding its messianic role in the history of the Slavic peoples, the researcher proves the absurdity of the very idea of the superiority of one nation over another. At the same time, intelligence focuses the reader’s attention on those dangerous tendencies of the spread of this theory, which in the future may lead to global world conflicts with catastrophic consequences. Following the further development of the ideology of pan-Slavism during the second half of the 20th century, the researcher reveals the process of transformation of Moscow messianism into the leading role of the now Soviet (Soviet) people in world history, which received its theoretical embodiment in the concept of pan-Sovietism. It was she who contributed to the final consolidation of the lawless position of the Slavic peoples within the framework of a single state entity on the territory of Eastern Europe, and the emergence of a new socio-cultural generation with an ideologically shaped rejection of values contrary to communist ideals and a negative attitude towards the entire surrounding world. The research methodology is based on the philosophical-anthropological and psychological analysis of the key ideas of the concept of pan-Slavism and pan-Sovietism in the historical-philosophical studies of I. Mirchuk. In particular, we used formal-logical, critical and hermeneutic methods of research to reveal the process of transformation of the pan-Slavism mythology in modern Russia and its influence on the socio-political life of other Slavic peoples. Among the general scientific methods, the methods of deduction and comparison came in handy, which helped to analyze the views of individual representatives of various pan-Slavic currents on the problem of uniting the Slavic peoples into a single ethnic substratum in different historical time periods. And the principles of objectivity and systematicity helped us dispel the myth of Russian messianism among other Slavic peoples. Conclusion. Thus, the main mythologeme of the ideology of Pan-Slavism in the studies of the Slavic scholar I. Mirchuk was reduced to the messianic role of Russia and its people, as the leader among the entire Slavic world, in relation to all other, primarily European nations. Neglecting the historical and spiritual contribution to the development of the world culture of other nations and peoples, the Moscow Empire to this day continues to call itself the only center of true Christian traditions, which strives to lead the planet to a better future. Declaring itself the successor of the Roman Empire as the “Third Rome”, Muscovy, and later the Soviet Union, completely usurped the right of other Slavic peoples of the continent to independently choose their own path of state formation and social development. The transformational processes experienced by pan-Slavism at the beginning of the 20th century brought only the change of the name of the ideology to pan-Sovietism, fully preserving the essence of the imperial unity principle in all spheres of social and political life of the communist era. According to the leading communist ideologues, all the best that the world had could be found only in the Soviet Union, or rather in its capital. Other Slavic peoples got the desired equality only in the negative attitude of the center towards any manifestations of their own spiritual identity and economic initiatives, which were instantly punished by brutal repression and physical destruction under the slogans of finding non-existent enemies of the people and invented counter-revolutionary activities. The theoretically attractive idea of the special purpose of the Slavic peoples in the international arena has in practice turned into an imperial totalitarian dictatorship of one country, which wanted only one thing – world domination. [ABSTRACT FROM AUTHOR]