Hülegü
When Hulagu Khan conquered Baghdad, he asked the Scholars of the city : "Who is better, a tyrant Muslim ruler or a Kafir(infidel) judicious ruler?" None gave a response to this question but Ibn Tawus who said: "A Kâfir judicious is better." And the other scholars followed him in this reply. A reply that saved the life of many people in the city. Afterwards Hulagu Khan let Ibn Tawus to return to Hilla. However, Hulagu Khan gave the leadership of Alawites and then some cities like Baghdad to him which Ibn Tawus was reluctant to accept. Nasir al-Din al-Tusi advised him to save his life by accepting it and he did so.