It means recognizing that illusions ARE illusions, and not falling for them.
It means overlooking illusions and seeing past them, rather that taking them at their appearance and thinking they are real.
This extends all the way to the illusion of death, which is where the Son of God in all HIs divine freedom and power creates the ILLUSION that He has absolutely no freedom or choice left, or that things can happen to Him against His will.
This is of course impossible, so it is an illusion, bit it APPEARS on the surface to be an unwanted death, happening to someone who didn't seem to ask for it. But the Son of God is faking it.
If and when you can recognize and see that this is in fact an illusion of death, not a real death, then you are now over-looking and not falling for the trick. Believing it's real is a complete mistake.
You will only believe illusions are real when you forget to forgive, which puts you into so-called "judgement", which is really to do with attacking appearances and making them out to be the truth.
Illusions are not the truth. Death is not truth. But as soon as you are convinced that it's real you've become blinded, you've been tempted and you've succumbed to the deception. You didn't notice that it was the Son of God, infinite and immoral, who was pretending He can die.
And so because you didn't look past the ILLUSION of death, to see its Author, which would reveal to you plain as day - this is absolutely pretend - so you enter into the illusion yourself and go unconscious.
All you need realize then is that all you need to do to 'wake up' is to see correctly, ie have your perception corrected, so that you are not falling into the lie, are not believing the trap, and didn't go along with the story. It means fixing your vision on the truth, on what is really going on here, not buying into any form of victimhood or suffering or accidental events, and staying very certain that the immortal Son of God cannot be harmed. Death cannot be real. And nothing is really happening.
To overcome an illusion, ie "forgive", you must learn to see past the deception that you've fallen for, remember the truth, and stop taking it seriously. It's like some old trick that someone keeps playing on you and finally you figure out that someone is behind it and it's not just some random bizarre thing going on, his cover is blown and the illusion is broken, and now you can no longer fall for it. That's all it is, just learning to recognize and see the truth and stop being deceived by appearances.
All false appearances are your interpretation of the 'illusion of separation' as though it is not an illusion. Behind this misinterpretation there is still an illusion being created by the Son of God, but it has no power to convince you it's real unless you choose to play along with it. Then it's just something you can't believe anymore and you know is false. As such you escape death, because death is just part of believing that illusions are the truth.