@scout_more_often Were you stalling? There are two, well perhaps three ways. A non Cybran t3 shield with 30+ hives. I don't know the exact number, but there is a number of hives that will permanently keep up the shield vs a single mavor. It's in the 30-40 range I think, but you cannot stall mass at all.
The other way is highly apm intensive, but with shield micro. You have to constantly upgrade or rebuild shields, and do so with a lot of build power. Basically you want to have enough build power that in the time it takes for 2 shots to hit you can build a shield from scratch with enough time the new shield comes online before every other shot hits if that makes sense. Being able to do it between each shot is even better. This is what you have to do if you only have cybran t3, a mix of constantly upgrading them and rebuilding them.
The third and kinda troll way is to do the above as well as patrol continentals above the Mavor's target.
Also, you didn't ask this, but never make a Salvation before making a Paragon.
Edit: I have kept shields up over a paragon vs a mavor and a scathis at the same time by having some ridiculous number of hives, ~60 or so, assisting a sera t3 shield. It can be done, but you need an insane eco/paragon and a ton of hives.
Edit edit: Really you want a combo of the two strategies if you can afford it, that's the best way. Heavily assist shields that are still alive while building new ones and upgrading constantly.