I don't think that it's ever wrong to practice safely, as well as practice within the scope of one's license.
Hopefully your hospital has clear job descriptions to what an RN can do, what an LPN can do, as well is what an RN can safely and legally delegate to other RNs (from other units, etc.), LPNs and CNAs. Assuming such clear job descriptions exist and that they follow your state's legal scope of practice for RNs and LPNs, I would say that there exists much to back you up should you be asked to do something by any RN (or MD, for that matter) that is outside your scope of practice. Know your scope of practice
With all of that said, how unreasonable would it be to discuss your concerns with your nurse manager?? Hopefully he or she will at least simply let you express your concerns (vent) and keep them confidential (of course).
Regarding documentation. . . again, if done as expected by your hospital's policies and within your "scope of practice", you should be safe. And again, if there's any questions you might have regarding this, ask your nurse manager for clarification if you feel unsure about documentation.
It is no fun working with people you don't trust. One way to help cope with such situations is to be confident and knowledgeable with one's own practice, and be the professional health-care giver that you are. There are communication techniques one can use to professionally confront another health-care giver should he or she put you in an unsafe situation. Simply expressing your concern about the unsafe situation is one technique: "I am concerned
about. . . . "; "I believe that this situation is unsafe
. . . ", etc. Keeping the safety of the patient first might/should help with this. If your concerns go unheeded, go up the management/administrative "ladder". It's o.k. to "go up the ladder" when expressed concerns are ignored.
Good luck to you. . . .