Minecraft wiki entry for Things_not_to_do, associated text: Enchanted golden apples, which are extremely rare and only obtainable from loot chests in certain structures
Being revived by a totem of undying, which doesn't last long and can be obtained only from killing evokers in raids or woodland mansions
Suspicious stew which has been crafted using an allium, which only lasts for a few seconds
Getting a fire resistance potion from killing a witch, at a low drop rate and only if killed while drinking it
Getting a potion or splash potion of fire resistance from bartering with piglins, which requires access to the Nether