Full Circle - S6-E22
Corrected entry: When Daniel is talking to Jack in the lift, he mentions all of the eyes that Anubis possesses, and makes a reference to the Eye of Tiamet (it doesn't say this in the subtitles, however). But in the episode "The Tomb", the Eye of Tiamet gets blown up along with the Russian soldier. So Anubis can't have it because it got blown up.
Correction: The eye of Tiamet could have survived the explosion & been buried under the rubble of the ziggurat, so Anubis would just have to uncover it in order to gain it.