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Unless you cut the power wire with your antenna you should be fine. The antenna itself is designed to handle power surges ( usually lightning ) and should be safe to use any radios associated with it. Check the antenna itself for physical damage and replace if needed.
Any spot lights or running lights that came in contact with the wire should also be inspected for damage.
If only the hull or superstructure were involved there should be no problem.
All of your electrical circuits on a boat are "protected" so if any are not working check for blown fuses or flipped breakers. If any of the lights dont work after the breakers have been checked look for loose bulbs.
More likely upu probably no electrical damage.
I will be glad to answer any questions you may have.