The level of resistance currently believed to be required for fire/poison immunity is max+max+low (full Dragon Scale with a low UV).
I was immune to oil fires with high+max and a Slippery Wetstone Pendant (the 50-token pendant). This is slightly less than max+max+low I think.
If anybody else wants to double check, try full Dragon Scale and a Wetstone (the 5-token pendant that is slightly less than a low UV).
yah this was discussed in thar test feedback month ago but
devs didn't do anything to get rid of this :o
WTF