I assume you mean battle scene and not gaming session, unless your battle scenes usually last for an entire gaming session? This is not the case for me.
Like I said, I think that the likelihood of PCs remaining paralyzed for an entire battle scene are very low.
We used to play AD&D where Hold Person could target, what was it, 3 enemies?, as a second level spell, with a single-save or paralyzed for the duration (which was longer than any battle). I don't recall PCs having remained paralyzed for an entire battle - though it might have happened sometimes. Other PCs would cast remove paralysis as spells or scrolls; or at worst, Dispel Magic.
Like I also mentioned, I think that the challenge is not one of players having to sit entire battle scenes out. It's more a question of gaming dynamics. If as a DM I were to pit the PCs against paralyzing monsters and wizards with Hold Person every battle; then we'd have something to think about. But really, those situations are rare in practice; and then there are ways for PCs to remove conditions such a paralysis. Also, I don't play at low level (1-3), I prefer heroic tier (4-10), so PCs do have access to counterspells.
So I hear your question, but your question addresses a problem that simply doesn't exist in my experience. A player doesn't sit out an entire gaming session.