Possibly. The amount you receive is based on your best 14 to 22 weeks of earnings in the prior 52 weeks. The number of weeks used (14-22) is based on the rate of unemployment in your region. This is determined by EI. If you only worked 14 to 22 weeks in the past year, then the strike could affect the amount you receive from EI. But if you worked for more than 22 weeks in the last year, it’s unlikely to have any effect on the amount you receive.
Strike pay is not considered to be earnings for EI purposes, so it will not be deducted from your EI benefit.