Camera for only one light source with specific shader

Hello everyone,
Its my first Post in the Forum but i have very specific Problem.
My knowledge about the Engine: Beginner
I’d like to solve the Problem in C++ Code.

I’d like to set up a additional “Camera”.
This Camera should only respect one light source (a spotlight) and ignore all others (the spotlight although should be ignored by all other cameras).

Although that given Camera should use one specific shader for all objects (only inflicted by that given Spotlight).

My plan was to use a USceneCaptureComponent2D but i don’t know how to implement the given restrictions.
The resulting image is needed for further computation.

The goal is to simulate a physical Radar-Sensor (not a usual ingame minimap/radar).

Thank you in advance for your help.