From Ryzom Wiki
Shockwave is one of the 7 elemental damage types.
Shockwave is the racial damage type of the Tryker. The shockwave damage elemental spell can only be learned from a Tryker magic trainer once a mage reaches level 125 elemental magic. It is generally the preferred damage type to use while in the lakelands, as creatures there tend to resist it poorly.
Most animals and most intelligent plants have no protection against Shockwave magic; exceptions are the Horncher, Ploderos, Yber, and Psykopla. Most kitin do have protection against Shockwave magic, though in the case of Kincher, Kirosta and Kinrey it's no more than against any other elemental damage type. Outpost guards in lakeland outposts are immune to Shockwave spells.
Protection from Shockwave
Tryker player characters have a natural 20% protection from Shockwave damage. Any player can protect themself against Shockwave damage by wearing jewelry that gives additional Shockwave protection. You can have at maximum 70% protection, whether you're Tryker or not.
You can also increase your chances of resisting a Shockwave elemental spell by wearing jewelry that raises your Lakes resistance.
Non-magical Shockwave damage
Yber are capable of naturally unleashing an attack that does Shockwave damage, but this attack itself is physical and not magical in nature. That means Shockwave protection will protect you against it, but Lakes resistance will not help you resist it.
Many bandits and tribes guards also have random elemental damage added to their melee and ranged attacks, including Shockwave. If you're hit with Shockwave damage that way, Shockwave protection will decrease that damage, but Lakes resistance will not help you resist it.