I asked two questions (see here and here involving lightning for a species I created, called Viji. Viji are a race of metal-armored humanoids, and they live on mountains, so it seems obvious lightning will be a problem for them.
And as Shalvenay said about arc flashes on this question:
"This is the least-known mode of injury involved in most electrical incidents, but it causes the bulk of the actual damage, and can seriously or fatally wound a victim without shocking them.
(See this this later answer of mine for more in-depth discussion on arc flashes in a similar situation.)
Arc Flashes consists of a combination of intense heat (temperatures of ~20,000 Kelvins), radiant energy (from far IR to deep UV), concussive blast caused by the vaporization and rapid expansion (tens of thousands of times) of metal, and rapidly propelled superheated shrapnel (a result of the other factors); taken together, an unmitigated arc flash is easily equivalent to nearly a pound of TNT going off in your face, if not more. This would be the primary damage mode the knight would have to contend with, and could easily destroy significant portions of the knight's armor and gambeson instantaneously, while leaving him contending with the equivalent of a small pipe bomb going off at point blank range."
In other words, if I want Viji to be able to survive a lightning strike, they have to be able to handle arc flashes. Since Viji are already capable of ingesting and integrating minerals and metals from ingested rock and ore into their tissue (which is how they get their metal armor), and nature can be surprisingly adaptive, I feel like this should be possible.
So, my question is: Can Viji Feasibly Adapt To Handle or At Least Mitigate Arc Flash Damage?
Viji are a highly modified predatory subspecies of Homo Sapiens, which have metal armor; this armor is essentially bony plates, but with steel in place of calcium. Viji came to be more or less naturally, which is why I'm asking about feasible adaptations, something that Viji could naturally develop given the right conditions.
The adaptations I'm looking for concern:
Concussive force/shrapnel from rapid heating and expansion of metal armor