[It is still a senior's responsibility to look out for their junior, including making sure they won't break any rules. Otherwise the senior might end up regretting it...!]

Then why are you already trying to run from your responsibilities with your tail tucked between your legs, Fukuda-san?

[There's an unnecessary pause before Fukuda's name, as though Saito's using it for ironic effect.]

I wouldn't want to steal your role.

[He means Fukuda's role as his meat shield, not as his senior. Buuuut he's not going to elaborate on it.]