How do I block a request to a site?

General
#1

Site requests contain text ~VR-Alert-RU~18.021~
Example http://site.ru/97502~G k%20and%20Co%20Ltd.~VR-Alert-RU~18.021~0.00~15063.25~D O~USD.csv
How to block such requests?

No redirect, only block.

#2

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