All enemy models within D6" of the caster sustain a S5 hit. No armour saves allowed, even for magic armour.

This is an example of a spell which affects individual models from amongst a unit or group. In this case characters cannot use the Look Out Sir!' rule - although this could be regarded as exceptional in so far as the radius of effect is comparable to a template. However, given the nature of the spell is seems appropriate to disallow the 'Look Out Sir!'.