Saturn hasn't even thrown a punch.
He just used his presence.
You're still not getting it, Sanji isn't relevant here.
Franky, Bonney & Sanji couldn't even move.
Oda didn't even care to separate & hype Sanji from Franky & Bonney, they were all just "aura-diff'd" by Saturn.
Anything more will still be very bad for Sanji, Oda isn't writing him beating Saturn here lol.
If anything he's getting even worse treatment next if he even attempts to fight back.