(vi) in relation to any legal proceedings initiated against members a Committee appointed by both Dáil Éireann and Seanad Éireann, as regards matters arising solely from the performance by them of their parliamentary functions as such members, and where authorised by Dáil Éireann and Seanad Éireann to do so on behalf of such members and in accordance with the terms of the authorisation, to conduct defence of such proceedings on behalf, or for the benefit of, such members,".