The Shaper Teleport Slam.

I have a bit problems with this Shaper ability. For me it's most problematic mechanics during this event. I watched Ziz and Engeenering guides, but that slam is not rely well explained there. And this skill is very poorly telegraphed. I try keep be in distance almost all time and this is probably thing that kills me there. I'm not 100% sure at what moment I should stay close to him, and when run out. I play warchief dual totem build, currently full buffer 2x600k dps. I have 8292 hp and 73% phys dmg mitigation when I use basalt + lion roar at once.
Should I try tank this Teleport Slam being 100% in meele range? I saw many ppl bring quicksilver flask for this fight, I was using only shield charge for movement and dodging. Should I take one? I appreciate and helpful tips from experienced ppl. I'm still 100% shaper noob.

Guides I watched:

https://www.youtube.com/watch?v=KTH1tqbOgII

https://www.youtube.com/watch?v=fuPXLSG9lHs

Just killed shaper, if anyone in future will find this topic solution was tanking all teleport slams in meele range.

I used for this dmg mitigation flask setup:



but sometimes just fortify was enough.

Also pantheon power helps, I used Soul of Solaris and Soul of Yugul to reduce cold and physical dmg as much as posible.

I got only 1 death in this successful attempt. Before this I wasted 2 sets for practise.
Still shaking a bit :)

http://i.imgur.com/NnKgbp7.jpg