This is what I use - I got it from somewhere but I don’t remember where:
[Cerberus, *Ashimmu]
Capacitor Flux Coil II
Capacitor Flux Coil II
Dread Guristas Ballistic Control System
Ballistic Control System II
EM Ward Field II
Adaptive Invulnerability Field II
EM Ward Field II
Pith X-Type Large Shield Booster
Republic Fleet Large Cap Battery
Rapid Light Missile Launcher II
Rapid Light Missile Launcher II
Rapid Light Missile Launcher II
Rapid Light Missile Launcher II
Rapid Light Missile Launcher II
Rapid Light Missile Launcher II
Medium Warhead Calefaction Catalyst II
Medium Capacitor Control Circuit I
Warrior I x3 (I don’t use them but you can. Bring a depot to swap out new ones b/c they will be targeted)
Caldari Navy Scourge Light Missile x10000 (mission uses 550ish)
Mobile Tractor Unit
Land and don’t move/engage shield resists and booster (overheat nothing)/deploy tractor unit/attack a Sentinel and kill it/reload/attack 2nd Sentinel and kill it/reload/attack Ashimmu/reload twice and kill it
Haven’t timed it but should take about 6-7 minutes. I have a couple missile dps implants (567.8 dps) and a precision implant - those help. As long as you take out the Sentinels without delay you shouldn’t have problems tanking. Swap out the BCS II for another faction one if you can’t kill each Sentinel without reloading again. Fit assumes perfect shield skills, perfect HAC skills, near perfect missiles, etc. Try it on the test server first.
Good luck
EDIT - Copied wrong fit. S/B Pith X-Type Large Shield Booster. Apologies.