I have repaired Countless lightnigh strikes on QF aircraft, there is usually no or little damage done to aircraft, strangly every hit will be on a rivet or fastener. all it does is scorch the paint on the head of the fastener. and leave a black residue on the static wicks. i have seen aircraft come in for "c" checks and snag over 100 lightning strikes.
apart from the flash, and slight thumping noise, you would never know you were hit.