Karis Tribe

From Memory Alpha, the free Star Trek reference

The Karis Tribe are a group from Delios VII. Their shamans practice a ritual that increases the electrical resistance of their skin, allowing them to resist the plasma discharges that occur inside their sacred caves.

Chakotay thought that perhaps a similar process protected the monks of the Nechisti Order from the biogenic field around their shrine. (VOY: "Sacred Ground")