He remained unharmed despite how strong the lightning was. Cygnus on the other hand was grinning though because he prepared something bigger. With a snap, several lightning spears targeted the shield surrounding the Magus.
With the onslaught of these spears, the shield slowly gave in as line cracks started to appear. Those cracks slowly grew in size until the entire shield broke into pieces. Cygnus used this chance to let a stronger lightning hit his master.
The Magus already knew what his disciple was planning so before the next lightning hit him, a shield surrounded him once again. This time it was a layer of a honeycomb pattern that protected him. It was stronger than the first and when one section was destroyed, a reinforcement would also appear.