(2)And what will be its niyat?
بسم الله الرحمن الرحيم
(1) Whatsoever salah of four rakah you have missed during your Shariah journey, you will perform them as qaza with qasr, not full salah.
(2) It is enough to say: “I am making the intention to offer so and so salah missed during my journey”.
Allah knows Best!
Darul Uloom Deoband
This answer was collected from the official ifta website of Darul Uloom Deoband in India.