The research involves three members of our Center: Prof. Georgi Minczew, Prof. Małgorzata Skowronek, (both employed at the Department of Slavic Philology), and Dr. Jan Mikołaj Wolski, who directs the work of the team. The subject of interest will be monuments of medieval literature: liturgical and hagiographic texts. They will be analyzed in terms of the information they contain about heretics, the ideological message and the authors' emotional attitude towards religious minorities. The project will last two years (2024-2025), its results will be published in a series of academic papers.