This from Google:
"A typical direct lightning strike carries a current of approximately 30,000 amps (30 kA). However, this can range from 10,000 to 200,000 amps, depending on the specific strike. The voltage associated with a lightning strike can be as high as 300 million volts, with some strikes reaching one billion volts."
It would be very difficult for any domestic lightning rods etc to deal with that as they found out in 1984 when York Minster was burnt down following a lightning strike. The lightning conductor system was upgraded soon after.