Sounds like this is your first cycle? If so, I go another route, like test (250-500mg EW for 10 wks) as your base and then maybe some dbol( 30mg ED for 6 wks). Of course, use adex and follow up with PCT of Clomid. 

If you want to use drol instead of dbol, that can work, but IMO, dbol would be a better overall cycle with more controllable side effects. Still, if you're interested in Drol, or thats all you have available, In that case, 50mg ED for 4-6 weeks would work. The best way to protect the liver is to limit the length of time you use and keep the dose moderate. You can also use NAC, which may help some, as well as milk thistle. If you wanted to do a Drol only cycle, I dont think your gains will be nearly as good but it would look like this :

1-6

Drol 50mg ED, split into 2 doses a day

PCT starts the day after your last pill of drol. Clomid 100mg ED for 1 wk. Then 2 wks of Clomind at 50mg