The shield gating mechanic when coupled with [Brief Respite] and [Rolling Guard] allow you to make an immortal frame, if you can keep up with the play style. The trick is to watch your health always, as soon as your shields go your bar goes grey for the brief immortality period the new shield gating mechanic gives, at that time simply roll and thanks to the [Rolling Guard] mod your immortality timer is now much longer giving you time to cast abilities that will make the [Brief Respite] mod work, giving you back shields. Rinse and repeat, you cant die. (the [Brief Respite] + [Rolling Guard] setup can be used on many frames for immortality)
Also if you wish to run this setup more for focus grinding, swap the [Primed Flow] mod to the [Savage Silence] to allow you to not break the stealth affinity multiplier while mowing through the enemies effected by silence, and maximizing your focus gains.
Combine this build with a strong area elemental status weapon like the [Kuva Nukor], [Pox], [Cyanex] etc to spread multiple status across groups. Then swap to a strong melee, my current favorite is [Kronen], but so many melee atm are powerful, and you can literally survive to maximum enemy level 9999 with this build, doing 50 million plus crits.