Electrical Repair Questions? Ask an Electrician for Answers ASAP
You can turn it back on. If there is a problem then the breakers will let you know and will protect the circuit by tripping off. Unless completely submerged then electrical items don't mind a little water. Only the circuits in the immediate area would have gotten wet so the entire unit's electrical system would not be damaged. There will also likely be no short term consequences electrically. Depending on the type and material of the fixtures it is possible that corrosion will occur over time and may give you some trouble down the line. Honestly, I would worry more about the dampness of the other construction materials causing problems. Electrically you're fine to turn the power back on.
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