June 24 (Reuters) - Phillips 66 CEO Mark Lashier said at the Reuters Global Energy Forum in New York on Wednesday that refining and petrochemical earnings face greater volatility due to uncertainty from disruptions in the Strait of Hormuz. • Lashier added that the company has taken about $1 per barrel of cost out of its refining business and is targeting $5.50 per barrel, while costs in California are around $15 a barrel. • "We actually have imp…