High Elf Prince Tyrion
Wearing his Dragon Armour and mounted upon his armoured steed Malhandir Tyrion has an armour saving throw of 1+. Were he to fight on foot his armour save would be 3+. The wearer of Dragon Armour cannot carry a shield.
If Tyrion should fail his armour save then he may make a further special saving throw of 4+. Note this is a special save and not an armour save, and so is not affected by armour save modifiers or hits which discount armour saves.
Tyrion is completely immune to all fire based attacks, including magic fire, warpfire, and so forth.