You can find a sample application for recognition of a security clearance from a foreign power here

An application for recognition of a security authorisation of a foreign power of a natural person shall contain: (Section 62 of the Act):

1. the name(s) and surname(s) of the security authorisation holder;

2. the date and place of birth of the security authorisation holder;

3. the nationality of the holder of the security authorisation,

4. the reason why recognition is to be made,

5. the period for which recognition is to be carried out, 

6. the address to which the recognition is to be delivered,

7. the signature of the holder of the security authorisation or of an official of a foreign authority competent for the protection of classified information.

The application must be accompanied by: an official translation of the security authorisation or a certified copy thereof;; such documents shall not be required where the application is made through an office of a foreign power competent for the protection of classified information, provided that the latter certifies, on the application or attestation which accompanies the application, that the applicant is in possession of the relevant security authorisation.

 

Information on the recognition of a security authorisation issued by an authority of a foreign power

The Office shall recognise security authorisations if provided for in an international treaty by which the Czech Republic is bound. The Office may also recognise security authorisations if recognition is in accordance with the foreign policy and security interests of the Czech Republic; there is no legal entitlement to such recognition. In the procedure referred to in the third sentence, the Office may request the opinion of the Ministry of Foreign Affairs and the relevant intelligence services; If the Office does not receive the requested opinion within 30 days from the date of receipt of the request for such opinion, the opinion shall be deemed to be positive.

In the case of recognition of Slovak security authorisations in the Czech Republic and Czech security authorisations in the Slovak Republic, it is always necessary to submit an application through the relevant NSA. An application for recognition of a Czech security authorisation in Slovakia is submitted to the Czech NSA, which forwards it to the Slovak NSA. An application for recognition of a Slovak authorisation in the Czech Republic shall be delivered to the Slovak NSA, which shall forward it to the Czech NSA.

Recognition shall be sent by the Office to the security authorisation holder within 10 days of the date of submission of the application; if the application pursuant to Section 62(2) of the Act is not submitted through the Office of a Foreign Power, the Office shall send the holder of the security authorisation the recognition of Section 62(1) within 20 days of the date of delivery of the application to the Office. Recognition pursuant to the second sentence of Section 62(1) shall be sent by the Office to the holder of the security authorisation within 60 days of the date of submission of his application; if recognition would not be in accordance with the foreign political or security interests of the Czech Republic, the Office will not comply with the request and will notify the applicant in writing within the same period.

The requirements for recognition are set out in Section 62(5) of the Act.