Dear Zainab A Makawi I find your request somewhat strange. I do not recall that I ever got such a request when the journal asked for suggestions for (peer) reviewers. Which journal came up with this ‘demand’?
Anyway, one approach is to select a good journal in Parasitology for example https://link.springer.com/journal/436 then checked some of the authors that published recently and I came up with a few suggestions pretty soon:
Carlos A. Saumell https://www.scopus.com/authid/detail.uri?authorId=7801370418
Nguyen Tien Huy https://www.scopus.com/authid/detail.uri?authorId=57209480434
Fernando de Almeida Borges https://www.scopus.com/authid/detail.uri?authorId=15759345300
Etc.
‘Normally’ it is sufficient to select someone you know as an expert in your field and/or someone you cite/cited in your paper(s). Contact info can be found in their papers.