[quote=@vancexentan]
[url]http://typemoon.wikia.com/wiki/Skill#Magic_Resistance[/url]

Wiki states that the following classes have similar abilities to Artoria, and Lancelot in terms of abilities against magic:
Lancer, Archer, Rider, and oddly enough one assassin.

They're listed under class skills.


[/quote]

Class skills are automatically granted to everyone in a class. These are what are revealed through sabers cloaking. Presence concealment for assassins, territory and item creation for casters, etc.

Some servants may have personal skills that mimic class ones. For example, jack the rippers murderer of the misty night is somewhat similar to presence concealment