I will handle a cyber security resiliency project shortly as Project Manager (To tackle any malware etc attack mainly in reactive mode).
For job or academic project?
As Project Manager exactly what will you be accountable and responsible for in the Role?
Are you an IT professional that is assuming a Project Manager role or are you a generic Project Manager?
As Project Manager, have you ever managed IT or security projects?
I am new to it. Pl. suggest me any training links, documents, requirement gathering tips etc which can help me.
If it is for a job, then how did you get the role without being qualified for it?
Welcome to the forum! Congrats on the new project! For cybersecurity resiliency, I'd recommend starting with resources from NIST and SANS for frameworks and best practices. The CISSP certification can also provide a good overview. Cybrary and Pluralsight have great courses for training. For requirement gathering, focus on risk assessments and incident response plans. Good luck, and feel free to ask more questions here!
These are all very solid resources, but they will only help someone with experience. It seems from OP that they are in over their heads as opposed to asking for general guidance.
The learning curve is going to be steep.