This is my go to, most comfortable build for just about any content.

Run it with 4x blue shard for 4x150 enegry shield and a single red shard for ability strength.

If you run Power Drift and 2 Crimson Shard you can achieve a full strip in a single cast. But I opted for a higher Shield pool with a 80-90% armor strip per cast.

Using the right companion mod, this buid peaks at 10.1k Shield and has great sustainability through Arcane Aegis (Which I prefer over Arcane Barrier) and [Blazing Pillage]. An underated trick is to also carry a [Rakta Dark Dagger] modded for radiation damage, which allows you to leech 5% of your damage as Shield.

The companion mods in questions are [Shield Charger] and [Guardian]. Don't forget that both work with [Manifold Bond], allowing both mod to trigger more often.

Enemies are also slowed to a crawl making it safe, tanky and capable of stripping armor! Great for just about any content.

Note: This is viable up to about enemies level 2000 with the new shield system. Past that you would want to have [Fast Deflection] slotted instead of [Stretch] or [Boreal's Hatred]. It allows you to have a 2.2seconds shield recharge delay and have a 3.5sec immunity period. Basically invincible!