As of P&N v2.3c, the description of the Buckytube gel claims to have shield-protection, but it dosen't work. It has been changed for the next Version.
The shield defenses that DO work are the Heavy Shield Generators and the Hardened mini shields.
Both have high physical strength, and so resist shield disruptors well. The HSGs have 200 hitpoints, and so will only be destroyed by a Massive-mount Shield disruptor IV or V, from point-blank range.
HMSGs have 20-40 hitpoints, so you will only lose one per hit, up to 7 from a Massive mount, SD V at point blank. Even then, you only lose 7 components, for a maximum loss of 455 shield points.
Remember that Massive mounts only fit on Baseships or Battlemoons. You shouldn't be going to point blank range with them
