The Egyptian Book of the dead by P. Le Page Renouf and Edouard Naville

2. Oh Thoth who makest Osiris triumphant over his adversaries, let _N_

be made triumphant over his adversaries, even as thou makest Osiris triumphant over his adversaries before the Great Circle of gods in Tattu, on the Night wherein the Tat is set up in Tattu.(4.) The Great Circle of gods in Tattu is of Osiris, Isis, Nephthys and Horus the Avenger of his Father; and they who set up the Tat are the two arms of Horus, Prince of Sechem. They are behind Osiris as bindings of his raiment.