Belarus is one of the least religious societies of the former Soviet Union. Nevertheless, two Christian denominations – the Belarusian Orthodox Church and the Roman Catholic Church – do have a specific impact on social discourse, be it through facilitating the discourse on conservative moral values or linking their political and societal strategies to their Russian or Polish mother churches. However, neither of the churches has actively participated in civil protests criticizing the political regime. The protests before and after the Belarusian presidential election in August 2020 affected the churches and seriously challenged their self-perception. This article shows how the churches turned out to be heterogeneous structures with different levels of theological awareness in political crisis, civil self-consciousness, and the ability to mobilize. These findings and the fact that religion became a visible element of the 2020 protests significantly questions the concept of the church as a homogeneous and state loyal institution. Combining both empirical and theological approaches makes it possible to reassess the role of religion in post-Soviet social and political processes.