Around same time , he took part in the Il - Khan 's struggle against the rival Mongol ruler Berke of the Golden Horde .
Around same time , he reputedly saved Hulagu 's life during a battle .
Around same time , he took part in the Il - Khan 's struggle against the rival Mongol ruler Berke of the Golden Horde , and reputedly saved Hulagu 's life during a battle .