Antifire

An anti-fire potion provides slight immunity to a dragon's breath. However, when used in conjunction with an anti-dragon shield it will provide complete immunity against dragon fire for exactly 6 minutes. It can be made by a player with 69 Herblore by mixing lantadyme and ground blue dragon scale in a vial of water, which grants 157.5 Herblore experience. Players will get a warning in their chatbox when the potion is about to wear off, then they'll get another message when it has worn off. Anti-fire Potions are also useful especially against metal dragons and the King Black Dragon, though only when combined with an anti-dragon shield. If you are using a two handed weapon while fighting dragons, this is highly recommended. WARNING!There is still a 10% chance of still getting burnt by a dragon's firebreath. Anti-firebreath potion does not make you fully immune.