Which ZETA is more beneficial to my team, DN or CLS

Since you run Chaze the zeta cleanse probably wouldn't be my first choice, I run a similar team and I zetad It Binds all Things. In part because I was still experimenting with teams and I wanted to see how that TM gain combined with a Rex lead would speed the teams TM up. But I certainly don't regret it given that CLS is a monster in both raids.

That said, I don't think any of the zetas will help dissuade people from attacking you.