Arnold & Maria -- Truce on the Holy Day

5/15/2011 3:30 PM PDT BY TMZ STAFF
Arnold Schwarzenegger and Maria Shriver have put aside their differences in the name of a higher power ... by showing up at the same church this afternoon.

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Arnold and Maria are known to attend St. Monica's Catholic Church in Santa Monica, CA every Sunday. According to our spies, they both showed up this afternoon ... but they arrived separately.

There are some things even HE can't fix.