some of these were pretty grim:
1. You ceased to rule the Athenians, O Spartans, before Socrates died.
Athenienses regere desivistis, Spartani, priusquam Socrates mortuus est.
I think this one's ok.
2. Let Cicero enjoy his power, as long as he spares the innocent.
Cicero potestate sua fruatur dum innocentibus parcat.
Is using the subj for the first bit ok? I've put parco in the subj as well for some reason, can't remember why. dum ...