Relic 1 (Gilded Cross)
On the escarpment, in front of the entrance to the prophet's tomb.
Relic 2 (Wooden Cross)
On the bank, behind one of the columns.
Right after you enter the prophet's tomb, (the Syrian Tomb Base Camp), on the left, on the pile of planks.
On the ground next to the campfire, in the Syrian Tomb Base Camp.
On the wall, next to the column.
Right after you enter that chamber, on the ground on the right.