(For a Reuters live blog on U.S., UK and European stock markets, click LIVE/ or type LIVE/ in a news window) July 26 (Reuters) - European stocks eased from all-time highs on Monday after regulatory concerns knocked Asian markets lower, while automakers retreated following a strong showing last week. By 07013 GMT, the pan-European STOXX 600 index fell 0.4%, with automakers leading losses. Porsche slid 4.5% as it traded without entitlement for dividend, while French car parts maker Faurecia slipped 1.1% despite raising its 2021 net cash flow target. Dutch technology investor Prosus NV, which has a 28.9% stake in Chinese internet giant Tencent, tumbled 6.9% to a one-year low after Beijing intensified its regulatory crackdown on Tencent. Meanwhile, Europe’s largest low-cost carrier Ryanair rose 2.1% as it nudged up its forecast for full-year traffic on strong summer bookings. (Reporting by Sruthi Shankar in Bengaluru; Editing by Sriraj Kalluvila) Our Standards: The Thomson Reuters Trust Principles.