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You can try splitting the beast squad and creating several groups of one unit each. When the enemies approach, send the single units in to engage, so the enemies waste their attacks on them. Then, attack with the main squad. But it doesn't always work.
Added 1 minute ago
No, it's impossible. You need to keep in mind that you'll have to run away from the scout, or find a clever way to distract him.
Thanks for the tip, maybe I would have figured it out myself, but not on the first try):D :)