Lightning Protection / Brown Power?

I am new to 'better audio' but am learning fast. But one thing is bothering me, esp coming from an IT background where UPSs are required.
I understand clean power is a must and makes a big difference, even the cord.
I understand many of you use (and I recently purchased) audiograde Line Conditioners.
I understand common, even good full sine wave UPSs are not good enough for audio.
What I do not understand is
a) what you all do to protect $10K +++ of equipment from lightning surges and
b) temporary voltage dips, which cant be good for expensive equipment
or if
c) a line conditioner does all this
or if
d) the $2K line conditioner is just sacrificed in such a case