Instrument/electronics damage and computer box malfunctions are common hazards associated with the rare but direct lightning strike. Exploding radomes (sounds worse than it is) have occurred more than a few times. A nearby bolt can also cause temporary blindness - a minor but still serious consideration.
The storms that produce lightning will often have strong downdrafts, wind shear, hail and heavy precipitation that are all far more challenging to flight safety than the lightning itself.
If able, ATC will route aircraft around heavy cells in the terminal area while a course deviation may be the wise choice on the way up or down when your own radar is showing strong returns if ATC is able to comply. The big stuff will be smartly avoided by your captain.
Regarding takeoff and landing, if the field is open, the big birds will (safely) fly to and fro.
