Any professional balanced microphone shouldn't be harmed by phantom power if everything (preamp/board, cables, mic) are in good working order. An unbalanced mic on the other hand (like a vintage ribbon mic) would most likely be fried. The idea behind phantom power is that, theoretically, a balanced mic won't even 'see' the voltage unless it is wired to do so...that's where the 'phantom' name comes from I believe.
-Frank