Toxic proc'd or shields depleted? [Rolling Guard] > Pillage.
[Rolling Guard] on cooldown? Absorb > Pillage.

[Brief Respite] + [Augur Reach] gives us 0.3 second shield gating and Pillage takes 0.8 seconds to fill our shields back to full for complete (1.3s) shield gating, so as long as your shields don't instantly deplete in that 0.5 second moment you're practically immortal.

[Adaptation] can be interchanged with [Pacifying Bolts] if you prefer the CC from that augment over the damage reduction.

Could also run a [Rakta Dark Dagger] for more sources of shielding.