Teacher, Do I need to surround myself mentally with protective light before entering into meditation?
Friend, You can include this exercise if you want, but it may reinforce the false notion of being separate from the Infinite. It certainly isn’t necessary, because behind the temporary mind-body-personality façade, your authentic Self is the light of pure consciousness. This was so prior to your current embodiment and will remain so following this earthly sojourn. So, since you always, already are the light of pure consciousness, why add stuff to Self? The Infinite is expressing as “you,” and is not in need of creating a mental light of protection.
Dive more deeply in meditation. Devote yourself to quality inward time so you can realize the timeless light that you have always been.