Every one of his companions who was killed!

"Every one of his companions who was killed, every one of the members of his household who was killed, it was as if a part of the Imam's blessed body was cut off. And the Imam was patient during each of these events, one by one. He sipped at patience drop by drop. This movement was this great. And the result was clear. As a result, those values that Imam Husayn wanted to remain in the world, remained: the Qur'an, the name of Islam, the values of Islam, the traditions of the Prophet, and in a more limited and important way, Shi’ism, which is the school of the Household of the Prophet, all remained."

 Imam Khamenei