Specifically from the three passives. With all three, starting at 60% health, the resist scales up to 60% at 0 health. Throw in a fully slotted tough and then set bonuses for more and you start hitting ridiculous levels of resists while still being softcapped with capped DDR. Well built and played, it's cruise control immortality.
Some notes: the scaling resists from the passives do NOT include psi protection. All other damage types are covered (toxic was recently added.) But many psi attacks have a positional component, so those get covered by your defenses and you can again shore that up with set bonuses should you desire.