I summon elements and 4 archangels to quarters
I call Gaia and Qabala correspondence to Malkuth to seal the ground below.
I call Ouranos and Qabala correspondence of Keter to seal the sky above, together with Sky Goddess and Sky God.
Into middle I call personal guardians and visualise Merkaba to seal me.
Than I call Goddess and God to preside over the ritual.
but... how do you seal the cross-quarters?