Summary Summary Companies STOXX 600 earnings seen growing 7.3% in Q1- Refinitiv I/B/E/S European stocks off highs Net profit margins seen declining in Q3 – Refinitiv I/B/E/S Resilient consumer continues to absorb higher prices – Bernstein LONDON, May 19 (Reuters) – Big European companies have delivered significantly stronger than expected first-quarter results, defying a challenging economic backdrop that includes surging inflation and rising interest rates. But European stocks are down from a 14-month high in April, as investors worry about the health of the global economy, falling customer demand and pressures building on profit margins. About half of the STOXX…