/usr/share/php/Predis/Protocol/ is in libphp-predis 0.8.3-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Predis/Protocol/CommandSerializerInterface.php
/usr/share/php/Predis/Protocol/ComposableProtocolInterface.php
/usr/share/php/Predis/Protocol/ProtocolException.php
/usr/share/php/Predis/Protocol/ProtocolInterface.php
/usr/share/php/Predis/Protocol/ResponseHandlerInterface.php
/usr/share/php/Predis/Protocol/ResponseReaderInterface.php
/usr/share/php/Predis/Protocol/Text/
/usr/share/php/Predis/Protocol/Text/ComposableTextProtocol.php
/usr/share/php/Predis/Protocol/Text/ResponseBulkHandler.php
/usr/share/php/Predis/Protocol/Text/ResponseErrorHandler.php
/usr/share/php/Predis/Protocol/Text/ResponseIntegerHandler.php
/usr/share/php/Predis/Protocol/Text/ResponseMultiBulkHandler.php
/usr/share/php/Predis/Protocol/Text/ResponseMultiBulkStreamHandler.php
/usr/share/php/Predis/Protocol/Text/ResponseStatusHandler.php
/usr/share/php/Predis/Protocol/Text/TextCommandSerializer.php
/usr/share/php/Predis/Protocol/Text/TextProtocol.php
/usr/share/php/Predis/Protocol/Text/TextResponseReader.php