how'd you beat him?
If I remember correctly, on the outside we had a gunslinger, sunsinger, and me playing defender titan. Our portal team was a voidwalker, another defender titan (I think he took shield) and I don't remember the other. One of us on outside would stand on the right pillar, one on left pillar and another on the 2nd left pillar (this helps since it doesn't really matter which side they get ported to). Inside, the voidwalker would help with the praetorian if his super was up, and I think the other also shot some rockets or whatever. The relic carrier would run out while they were killing the last oracle. I'd run to the middle and throw my titan bubble on the back half. Everyone but one person would come to the middle and dps the boss. The sunsinger stayed out and killed supplicants. That was pretty much it, I think we did it in 5 portal runs. Sunsinger is good for outside, but having a voidwalker inside really, really helped.