Did you try Talisman Thickener? It looks like it's a group spell according to allas? Everything else looks right....there's no fire resistance tied to it, so I doubt there's any Ink of Ro. Other spells that have "absorb damage" as part of their description only have Ink of Pain...The druid spell that's similar has 2 Ink of Pain and 1 ink of Zek, but my guess is the ink of Zek is in that mix because there's a chance you'll get a "wild" version of the spell more than anything else, but maybe because it does more damage after 10 and after 20 there might be an ink of zek in this too.
If I had to guess:
Fine Runic Charta Arcanum
Ink Additive of the Nameless
Quill of the Arch Convoker
Talisman Thickener
Ink of Pain 1 or 2 or maybe 3?
If that doesn't combine, toss 1 Ink of Zek in and then try Ink of Pain at 1, 2 and 3 again.