The Canadian lender joined Bank of Nova Scotia BNS.TO in reporting a lower profit as fees from advisory and deals tank due to escalating worries of an economic downturn. Adds details about results Nov 30 (Reuters) - National Bank of Canada NA.TO posted a lower fourth-quarter profit on Wednesday, as the Canadian lender set aside higher provisions in the face of an economic downturn. The Canadian lender's personal and commercial unit saw net income jump 13% on strong lending as the central bank pumps up interest rates to combat decades-high inflation.