The Sacred Item Scroll contains all the items information that you will need to give to Zeus in return for immortality.
How to get the Sacred Item Scroll
On the Tree of Immortality, Zeus will angrily appear once you got the apple, but he will offer you immortality if you retrieve 5 sacred items for him. These items are listed on a scroll that Zeus leaves on the tree. The items you must retrieve are the ring from the nose of the Minotaur, a flower from the garden of the Sphinx, a scale from the Hydra, a giant pearl, and one of Cerberus’ whiskers. Go down and leave the tree, you meet the goddess Athena, Zeus’s daughter, who will warn you to not to trust Zeus and he may have secret agenda. She arranges for you to use the olive trees as a source of communication to you.