You flee in the opposite direction, leaving Eustace behind. Whatever his fate will be is now between him and the gods.
As you run away, you keep looking behind your shoulder to see if you are being pursued. Fortunately, nobody is behind you, but unfortunately, you don’t notice the tree branch in front of you, and you run into it face-first! This knocks you out.
When you come to, the first thing you notice is that the sun has set.