Answer: The shield is basically the restriction of working with your desires. The sword is when you turn these egoistic desires into altruistic ones, strike your enemies with it. That is, you defeat them, conquer them, so that instead of working for receiving, they work for bestowal.
Question: Does the ten also get a shield and sword?
Answer: Of course. It means that before getting them, people should gather in the ten. Before that, nothing is given to anyone separately.
Kabbalah speaks not about one person, but about ten, which comes together as one organism. Otherwise, they will not be able to annul themselves to each other and somehow start becoming like the Creator.
From the Kabbalah Lesson in Russian, 4/7/19