Corpus of Electronic Texts Edition
The Siege of Knocklong (Author: Unknown)

section 26

When at last the army perceived this, they wondered at the fracas that had taken place among them. ‘An alien throng is fighting against us,’ they said, ‘or some powerful magic has been used.’

The druid turned aside from them then, leaving the army in this state of confusion. It was made known to Cormac, however, that they had been the victims of powerful magic and he ordered his people to be brought to him privately in the camp where he made a savage complaint against the druids in whom he had placed his trust, that is Colpa and his companions. They said, however, that it was not their fault, as it was not they who had given the order to attack. After this, they rose up and directed a magic breath at the army and worked intense magic. As a result of this, each one recovered his own form.