Mikhael of Chernigov https://en.wikipedia.org/wiki/Michael_of_Chernigov
Before entering Batu's tent, the Mongol priests ordered him to go through the sacred fire and bow to their idols, to which Michael replied: “I can bow to your king, for the sky handed him the fate of earthly states; but a Christian does not serve either fire or deaf idols.” For refusing to worship, on the orders of Batu, the prince was executed; followed by death for faith and his faithful boyar Theodore.
As you know, the founders of Muscovy, Rus, accepted a voluntary entry into the Ulus of Jochi. On the contrary, the leaders of Ukraine refused to come under the rule of the Mongols. At first, the Mongols held them by force, but after the civil dynastic war in the Ulus of Jochi (Kipchak and Rus), Ukraine broke away and their development went differently compared to Northern Rus.
Before entering Batu's tent, the Mongol priests ordered him to go through the sacred fire and bow to their idols, to which Michael replied: “I can bow to your king, for the sky handed him the fate of earthly states; but a Christian does not serve either fire or deaf idols.” For refusing to worship, on the orders of Batu, the prince was executed; followed by death for faith and his faithful boyar Theodore.
As you know, the founders of Muscovy, Rus, accepted a voluntary entry into the Ulus of Jochi. On the contrary, the leaders of Ukraine refused to come under the rule of the Mongols. At first, the Mongols held them by force, but after the civil dynastic war in the Ulus of Jochi (Kipchak and Rus), Ukraine broke away and their development went differently compared to Northern Rus.

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