I'm pretty sure you get a save when you are the victim of a timestop, but you may be automatically hit by people who are moving around. I'm not sure. Can someone who has fought the Eclipse a few times in recent memory with "show hit roles" enabled comment on this?
What do you mean "you get a save"? When an attack is made during Time Stop, there is no "to hit" roll - you always hit automatically. This is why Time Stop + GWW (or Improved Haste) is a wicked combo, why your Liches with MMMs always take at least 50 HP off of anything in sight and why the Eclipse gang is so nasty. I do do not know what the interaction is between Harm and Time Stop, but I strongly believe that it works the same way - an automatic hit with no save (Harm never grants a save). If you ever let Sendai cast Time Stop, somebody in your party will probably die.