ANSWER:

You must repeat it again as thuhur as catching the imam in tashahud means that you had missed the Jumah prayer but Allah will reward you for it fully for attending that brother. 

In jumu’ah in the first rakah the person next to me passed out & hit the mimbar face first, I broke my prayer to check on him & took him to the back & gave him water & quickly joined the Jama’ah again but the Imam was sitting in for tashahhud after salaam I stood up and prayed 2 raka’h did I do right? Or should I pray dhuhr? And did I missed the reward of jumu’ah?

Prayer |