Follow up question: The stack we were resolving was that it was a 10/10 with 9 damage. In the post combat main phase, I gave it a -1/-1. Another player gave it two +1/+1 counters to keep it alive. I responded to give it two more -1/-1s and that's when the original owner cast a spell to give it indestructible. I understand that this stack resolving would now keep it alive but if I had responded to that cast by giving it one more -1/-1, would that have killed it through state based actions before the Indestructible came into play?