Defamation suit

Hi, wishing you all
I'm a senior citizen 80yrs, in 2018 I filed eviction case against my tenant for not vacating my house
Now the case has reached evidence stage I gave agreement copy as evidence made for only 11months
Tenant is not giving any evidence instead putting I/A applications alleging false statements thru his advocate
In my one of the I/A application put for rent which was pending for 11months I mentioned all previous court case history of the tenant (all civil case 1criminal case) with court certified copies stating the tenant must pay rent till the disposal of the suit
For this the tenant is threatening me that he will file defamation case against me for crore
My question is
1 How many I/A lapplications can be applied can this be blocked to speed up our case
2to prove my case I'm taking all court certified copies of previous case of tenant & applied thru application how can it bdefemae my tenant when the cases are pending defamation case against me
3can he able to put defamation case against me