A material that transmits nearly all the light that strikes it is described as being "transparent", but that has nothing to do with "resistance to the light", whatever that is.
Even the blackest, densest material, like wood, foil, or concrete, has no "resistance" to light. It simply absorbs light that enters it, so some or all of the light that went in one side never made it to the other side.
Transparent material absorbs very little, so almost all of the light that goes in one side comes out the other side.
