Formality of: おXなされてくださりませ


What nuance would be given by this pattern, example:

> お助けなされてくださりませ
>
> Please help me




It sounds like pleading in a theatrical and archaic way. The same line is
found in a historical play set in ancient China, published in 1925.

> （宮女一）もし、お助けなされてくださりませ。  
>  （張春）お身は誰ぢゃ。敵は已にうしろに迫った。ここらに迷うていては危いぞ。

<https://dl.ndl.go.jp/pid/981972/1/113>

Even as a theatrical phrase, the construction may be getting obsolete. お＿なされ
and お＿くだされ are pretty much alive in the role language for historical play,
though.




It sounds like someone is intentionally making a funny sentence by playing
around with keigo. If you used it in a business setting, the listener would
either laugh it off as a joke or feel offended.

  * 助ける is closer to "rescue" rather than "lend a hand". It depends on the context, but unless you're really in danger (of losing your job, etc), the appropriate verb is 手伝う, 力を貸す, 助力する, etc.
  * You are stacking honorific expressions too much, and くださりませ sounds like a samurai.

