Armor of Ishak Pasha

The Armor of Ishak Pasha was a powerful set of armor said to hold mystical powers, due to it bearing a cursed marking.

Acknowledging his "unbreakable will," the Sultan entrusted the armor to the Janissary Murat Bin Husn.

Murat devised a plan to keep the armor safe by hiding it at the Hagia Sophia, and renovating the Great Chain in Constantinople's harbor to protect the city. However, within a few months, the Assassin Ezio Auditore da Firenze had destroyed the Great Chain and taken the armor from the Hagia Sophia.

Obtaining the Ishak Pasha Memoir Pages
Much like the other treasures, one method is to use Eagle Sense as you travel through Constantinople. However, this can be a tedious task, as there are 10 pages scattered throughout this grand metropolis. Another method is to unlock the Ishak Pasha Memoir Pages map. This can be done by obtaining 25 Animus Data Fragments. Afterwards, this will unlock the map at any Book Shop for you to purchase.

Once the armor is obtained, it offers increased health than most armor, excluding the Master Assassin's Armor set, which has the same stats, but offers a chance to prevent damage from enemy bullets. It also reduces damage from enemy bombs.

Source

 * Assassin's Creed: Discover Your Legacy